题目内容
Mary’s score on the test is the highest in her class; she ________ have studied very hard.
[ ]
A.may
B.should
C.must
D.ought to
答案:C
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相关题目
—Mary’s score on the test is the highest in her class.
—Really? She have studied very hard.
| A.may | B.ought to | C.must | D.should |