[Q]: How does the sentence end?

The doctor tried to cure the woman of her cancer an experimental drug, but he was unsuccessful because the

[A]: drug was too weak.

[Q]: How does the sentence end?

Christopher bought Benjamin a comic book for his birthday because

[A]: Christopher knew he liked comics.

[Q]: How does the sentence end?

He put the dollar bill in the drawer instead of his pocket, because the

[A]:
drawer was the least expected hiding spot.