IN:
Multi-choice problem: [they]

People like dogs but they do not like cats.

OUT:
People


IN:
Multi-choice problem: [they]

The Drill Sergeants trained the troops aggressively so they could prepare them for the impending war.

OUT:
The Drill Sergeants


IN:
Multi-choice problem: [they]

The DEA raided the Mexican Cartel's warehouse because they had their drug business discovered.

OUT:
Mexican Cartel


IN:
Multi-choice problem: [he]

Jim was staring at the guy with the snowboard, because he was doing tricks.

OUT:

the guy