Question: Let's complete this passage.
WASHINGTON (CNN) -- Federal transportation safety officials Wednesday issued an "urgent" recommendation calling for a redesign of a component on some Boeing 777 aircraft engines -- a component blamed for two major mishaps in the past year. The engines on this British Airways jet lost power as it prepared to land in London on January 17, 2008. National Transportation Safety Board investigators said the Rolls-Royce engine component played a role in the January 17, 2008, crash of a British Airways jet near London's Heathrow Airport. Both the plane's engines lost power as the plane approached the runway, and 13 people were injured in the resulting crash.

The NTSB recommended that, once Rolls-Royce completes its redesign, the new system be installed on all affected

OPTIONS:
- Boeing 777's at their next maintenance check or within six months.
- British Airways's at their next maintenance check or within six months.
- CNN's at their next maintenance check or within six months.
- Heathrow Airport's at their next maintenance check or within six months.
- London's at their next maintenance check or within six months.
- NTSB's at their next maintenance check or within six months.
- National Transportation Safety Board's at their next maintenance check or within six months.
- Rolls-Royce's at their next maintenance check or within six months.
- Safety Board's at their next maintenance check or within six months.
- U.S.'s at their next maintenance check or within six months.
- WASHINGTON's at their next maintenance check or within six months.
Answer: Boeing 777's at their next maintenance check or within six months.

Problem: Choose the next sentence
By Matt Blake A retired FBI agent has become the longest-held American hostage in history, more than six years after he was kidnapped in Iran. Robert Levinson, 65, has now been held for exactly 2,455 days - one day more than US journalist Terry Anderson who was released by his Iran-backed Hezbollah captors in 1991, according to the FBI. Levinson, who left the bureau in 1998, was working as a private investigator looking into cigarette smuggling on the Iranian island of Kish - a hotbed for organised crime - when he vanished in 2007. The last his family heard of him was in 2011 when they were sent video and photos of him an anonymous email sparking fears the Iranian intelligence services may be behind his abduction.

There were no raids, and officials determined that the episode was a ruse by

OPTIONS:
- American counterintelligence to learn how U.S. intelligence agencies work.
- FBI counterintelligence to learn how U.S. intelligence agencies work.
- Hezbollah counterintelligence to learn how U.S. intelligence agencies work.
- Iran counterintelligence to learn how U.S. intelligence agencies work.
- Iranian counterintelligence to learn how U.S. intelligence agencies work.
- Kish counterintelligence to learn how U.S. intelligence agencies work.
- Levinson counterintelligence to learn how U.S. intelligence agencies work.
- Matt Blake counterintelligence to learn how U.S. intelligence agencies work.
- Robert Levinson counterintelligence to learn how U.S. intelligence agencies work.
- Robert Levison counterintelligence to learn how U.S. intelligence agencies work.
- Terry Anderson counterintelligence to learn how U.S. intelligence agencies work.
- US counterintelligence to learn how U.S. intelligence agencies work.

Answer: Iran counterintelligence to learn how U.S. intelligence agencies work.

QUES: A COMPLETION PROBLEM. 

LONDON, England (CNN) -- The famous "empty" fourth plinth in London's Trafalgar Square is to be occupied by volunteers for 100 consecutive days, 24 hours a day, the artist Antony Gormley has announced. Marc Quinn's work "Alison Lapper Pregnant" caused a stir when it was unveiled on the fourth plinth. Since 2005 the Mayor of London's Fourth Plinth Commissioning Group has picked an artist or artists to fill the landmark space with a new piece. Gormley and Yinka Shonibare, whose scale replica of Nelson's ship, HMS Victory, will follow later in the year, were selected from a shortlist of six artists. What would you do on the plinth? Tell us

Over the decades, the square has been the place where

OPTIONS:
- Alison Lapper Pregnant go to celebrate sporting victories or national occasions, as well as stage demonstrations.
- Antony Gormley go to celebrate sporting victories or national occasions, as well as stage demonstrations.
- CNN go to celebrate sporting victories or national occasions, as well as stage demonstrations.
- England go to celebrate sporting victories or national occasions, as well as stage demonstrations.
- Fourth Plinth Commissioning Group go to celebrate sporting victories or national occasions, as well as stage demonstrations.
- Gormley go to celebrate sporting victories or national occasions, as well as stage demonstrations.
- HMS Victory go to celebrate sporting victories or national occasions, as well as stage demonstrations.
- LONDON go to celebrate sporting victories or national occasions, as well as stage demonstrations.
- London go to celebrate sporting victories or national occasions, as well as stage demonstrations.
- Londoners go to celebrate sporting victories or national occasions, as well as stage demonstrations.
- Marc Quinn go to celebrate sporting victories or national occasions, as well as stage demonstrations.
- Nelson go to celebrate sporting victories or national occasions, as well as stage demonstrations.
- One & Other go to celebrate sporting victories or national occasions, as well as stage demonstrations.
- Trafalgar Square go to celebrate sporting victories or national occasions, as well as stage demonstrations.
- Yinka Shonibare go to celebrate sporting victories or national occasions, as well as stage demonstrations.

ANS: Londoners go to celebrate sporting victories or national occasions, as well as stage demonstrations.

QUES: A COMPLETION PROBLEM. 

(CNN) -- A series of text messages tipped off authorities to an alleged Columbine-inspired plot by two high school students to detonate bombs during a school assembly, according to a Utah police document. The plot was uncovered Wednesday at Roy High School in Roy, according to police. "This was not idle chatter," Police Chief Greg Winham said Friday. "There was significant thought, there was significant purpose, and there had been some preplanning and training." Authorities arrested 18-year-old Dallin Morgan and a 16-year-old boy who, fascinated by the mass 1999 killing at Columbine High School, had interviewed that Colorado school's principal six weeks earlier.

He recalled that the 16-year-old identified himself as a sophomore and student newspaper editor from

OPTIONS:
- CNN, who was "in town (and) had some questions to ask me."
- Colorado, who was "in town (and) had some questions to ask me."
- Columbine, who was "in town (and) had some questions to ask me."
- Columbine High School, who was "in town (and) had some questions to ask me."
- Dallin Morgan, who was "in town (and) had some questions to ask me."
- Greg Winham, who was "in town (and) had some questions to ask me."
- Roy, who was "in town (and) had some questions to ask me."
- Roy High School, who was "in town (and) had some questions to ask me."
- Utah, who was "in town (and) had some questions to ask me."

ANS:
Utah, who was "in town (and) had some questions to ask me."