The man over there _________ be over fifty. He looks so young.
#74552
A
mustn’t
B
must
C
can’t
D
can
推荐题目
—Look! It________be the new woman manager. —It________be her.She has just left for Shanghai. 
#74701
A
can;mustn’t
B
must;can’t
C
must;mustn’t
D
can’t;must
You          drive your car so fast. It’s dangerous.
#74761
A
wouldn’t
B
shouldn’t
C
couldn’t
D
mightn’t
-May we start the meeting now?-No, we________ . We__________ to start until the manager comes.
#76883
A
mustn’t; are allowed
B
don’t have to; are supposed
C
needn’t; aren’t allowed
D
can’t; aren’t supposed