---Listen! Is Tom singing in the room? --- No, it ______ be Tom. He has gone to Paris.A. mustn’t B. needn’t C. can’t
His son has poor eyesight because he plays _______ computer games.
_______we were having at the party!
David scored a wonderful goal _____the football match and the team won the match ______.
—Shall we go to the Great Wall on National Day? —It’s a great idea ,__________we don’t have enough money.
The chair is made_____wood and the paper is made _____wood,too