－Mom, I’m leaving. －It’s raining. You’d better ________ an umbrella with you. 

The driver tried everything he could think of, but the car just ______ not move.

—We want someone to design the new art museum for us.—______ the young fellow have a try?

I’m impressed with his determination. When he had a problem to solve, he  _____ work at it until he found an answer.

—Look! Is that Mr. Green?—It          be Mr. Green. He has gone to Shanghai.