Problem: How does the sentence end?

Jeffrey raised Derrick's fish for many years. 
OPTIONS:
- Jeffrey was more responsible with the pet fish.
- Derrick was more responsible with the pet fish.
Answer: Jeffrey was more responsible with the pet fish.

Problem: How does the sentence end?

Laura got Elena to model for pictures with them, and 
OPTIONS:
- Laura thought that she was a great model.
- Elena thought that she was a great model.
Answer: Laura thought that she was a great model.

Problem: How does the sentence end?

When they go shopping Adam always uses paper bag but Robert uses plastic as 
OPTIONS:
- Adam is ignorant of environment.
- Robert is ignorant of environment.
Answer: Robert is ignorant of environment.

Problem: How does the sentence end?

James cannot paint the whole wall green because there is not paint left. The 
OPTIONS:
- wall is very small.
- paint is very small.
Answer:
paint is very small.