Most of __________we call geniuses (天才)are successful only because they have made extraordinary efforts

Were it not for the debt, we ______a happy life:

When no one drives me home, I spend fifty minutes _______home every day.

Have you been to Shanghai –Yes ,I’ve been there twice.

Listen! The fire engine is roaring! (消防车吼叫) — Oh, there ______ be a fire somewhere. How terrible!