[Q]: How does the sentence end?

My dog had bacteria in his mouth that was less dangerous than the leg infection, because the 
OPTIONS:
- infection might kill him.
- bacteria might kill him.

[A]: infection might kill him.


[Q]: How does the sentence end?

Natalie laughed when Laura fell off the horse although 
OPTIONS:
- Natalie thought it was really painful.
- Laura thought it was really painful.

[A]: Laura thought it was really painful.


[Q]: How does the sentence end?

The track was no longer good for training so he went to the gym, because the 
OPTIONS:
- track was leading him to his goals.
- gym was leading him to his goals.

[A]:
gym was leading him to his goals.