题目内容
— ____ we go to help him with his work?
—No, you needn’t. He ____ finish it all by himself.
A. Must; can’t B. May; can C. Must; can
C
【解析】must表示“必须”,用must提问时,其否定回答用needn’t。can表示“可以,能够”。
|
—Mr. Wang________here now. He left for Shanghai by air this morning.
A.must be | B.can be | C.mustn’t | D.can’t be |