问题
Who is the young man on the billboard（广告牌） —-He is Yao Ming , _____
A:mustn’t; may
B:mustn’t; must
C:shouldn’t; must
D:can’t; should;
B:mustn’t; must
C:shouldn’t; must
D:can’t; should;
正确答案是：
同类题型
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_____ useful information they have heard!
What is the man over there?——I don’t know for sure. But I think he can be ____ but a teacher.