Instructions: In this task, you're given the title and three arbitrary sentences out of a five-sentence story. You are also given three additional sentence options, a, b, and c, that may or may not belong to the story. Your job is to pick the two options that seamlessly connect with the rest of the story; note that the selected choices may fit into the story at any point. Indicate your selected choices in order, i.e., as 'ab'/'bc'/'ac' and not as 'ba'/'ca'/'cb'. If options are equally plausible, pick the ones that make more sense.
Input: Title: Tim was doing poorly in a class. The teacher offered some extra credit. Tim agreed and did well on the assignment. Choices: a. Lucas tore apart the puzzle in despair. b. His grade improved a good bit. c. He asked the teacher for help.
Output:
bc