—–I think the man over there must be Tom.—–It _____ be him. He has ______ to America.

----Will you take up teaching as a career after graduation?---- Hard to say. I ________ go abroad for higher education instead, but it depends. 

According to the new traffic laws, people ______ drive after drinking wine or beer.

The motorbike _____ start, no matter how hard he tried.

–Must I return the story book tomorrow, madam?       –No, you ______ bring it here next Monday.