问题
Do we have to hand in our research reports this afternoon, Professor Smith?— Yes, you _______ . I will be waiting to check them all the afternoon.
A:should
B:may
C:can
D:must
B:may
C:can
D:must
正确答案是：
同类题型
You can read listand select an item from it just like you choose_____dish by reading the menu.
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