I was caught in a traffic jam for over an hour, otherwise I ______ you waiting for such a long time.
—Have you _________some new ideas?—Yeah, I’ll tell you later.
The writer is known ________her novels.
The kind old lady offered to ________the poor homeless stranger.
It _________have rained last night, for the ground is wet.
Bob is ________crazy about Beethoven that he knows all his works well.