题目内容:
John’s score on the test is the highest in the class; he _____ last night.
A.must study
B.should have studieD
C.must have studie
D.is sure to study
参考答案:
答案解析:
John’s score on the test is the highest in the class; he _____ last night.
A.must study
B.should have studieD
C.must have studie
D.is sure to study