[Q]: How does the sentence end?

During flu season people flocked to the pharmacies to buy aspirin but not medication because the

[A]: aspirin was plentiful.

[Q]: How does the sentence end?

My old knives would not cut through the bones because the

[A]: bones were very strong.

[Q]: How does the sentence end?

Matthew threw a grape at Kenneth, because

[A]:
Kenneth thought they could catch it in their mouth.