[Q]: How does the sentence end?

The man lost weight after he burned fat and lost some muscle, the 

[A]: muscle was heavier.


[Q]: How does the sentence end?

Neil was ready to sleep, but Donald was having a party, so 

[A]: Neil tossed and turned for an hour.


[Q]: How does the sentence end?

The store sold a frames that were made of a new type of wood and metal, but the 

[A]:
metal was prone to rust.