Problem: How does the sentence end?

Neil requested that Christopher change the water in the fish tank because 
Answer: Neil is at school.

Problem: How does the sentence end?

The summary couldn't capture the gist of the report, but communicated the essay well, since the 
Answer: report was so complicated.

Problem: How does the sentence end?

The pet sitting business Eric starts is a failure compared to Kenneth's because 
Answer: Kenneth is a responsible owner.

Problem: How does the sentence end?

The stack of money John just received would not fit inside his wallet, the 
Answer:
wallet was too narrow.