I was caught in a traffic jam for over an hour, otherwise I ________ you waiting for such a long time.

The islands developed on their own for 80 million years and _______ have many rare animals found nowhere else[ ]

think he will do me a favor—As far as I know, he is the last one to help others. He _______ be prepared to give you a hand, though.

A lot of trees ______ on the hillyesterday.

Did your uncle phone you again the next day? —No, it was a fortnight ___ he gave me a second call.