问题

The man in a black suit _ be our youth worker.— I’m sure it _ be him. I saw him in thelaboratory building some minutes ago.

A:must; can’t
B:can; mustn’t
C:can; could
D:must; won’t

正确答案是：

同类题型

Stop throwing litter around, or you’ll offendthe neighbors.

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I can play football very _______, but my brother isn’t _______ at it.

Thestudents sometimes complain about their new teacher because he is too strict____ them.

Peter, don’t forget your aunt when you are in Hangzhou.— I won’t, Mom.