问题

Mary’s score on the test is the highest in her class.— Really? She ______ have studied very hard. [ ]

A: may
B:AIDU_
C: must
D: should

正确答案是：

同类题型

_____ succeed in doing anything.

下列各句中没有语病的一句是（）

Would you like another piece of bread—_________ I’m full

Oh, it’s 22:30.I must go to bed. –________

ot take my car to the museum instead of walking—No, thanks, ______.