Problem: How does the sentence end?

Megan decided to push Laura to enter the contest because 
OPTIONS:
- Megan knew they would win the first prize.
- Laura knew they would win the first prize.
Answer: Megan knew they would win the first prize.
sentence: Mary had to ask Carrie for help with their fish tank because  OPTIONS:
- Mary had no experience with fish.
- Carrie had no experience with fish.
complete: Mary had no experience with fish.
Christine was warmer than Rachel was because 
OPTIONS:
- Christine was sitting closer to the fire outside.
- Rachel was sitting closer to the fire outside.
Christine was sitting closer to the fire outside.
Input: Continue writing.

Downloading programs came easy to Rebecca but was difficult for Christine because 
OPTIONS:
- Rebecca was technologically uninformed.
- Christine was technologically uninformed.

Continued: Christine was technologically uninformed.
Story needs to be completed:
Ben had to cut grass or trees in the garden. He chose the 
OPTIONS:
- grass because it was harder.
- trees because it was harder.

My choice:
trees because it was harder.
Problem: How does the sentence end?

The shoe store had the right size shoes for Derrick but not Craig because 
OPTIONS:
- Derrick has very big feet.
- Craig has very big feet.
Answer:
Craig has very big feet.