[Q]: How does the sentence end?

I was going to fix my car, but I decide to sell and buy a bicycle, because the 
OPTIONS:
- car is good for the environment.
- bicycle is good for the environment.

[A]: bicycle is good for the environment.


[Q]: How does the sentence end?

The plane took off without any engine problems, but when they got to altitude, the 
OPTIONS:
- plane start to shake violently.
- engine start to shake violently.

[A]: plane start to shake violently.


[Q]: How does the sentence end?

Kyle really enjoyed learning about World War II and Samuel did not. 
OPTIONS:
- Kyle check out a book on flowers.
- Samuel check out a book on flowers.

[A]:
Samuel check out a book on flowers.