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单选题

Comrade Li ________ be in Beijing because I saw him in town only a few minutes ago.

A
mustn’t
B
can’t
C
maynot
D
isn’tableto

题目答案

B

答案解析

暂无解析
举一反三
单选题

I have been studying here for four years, by next summer I ________.

A
shallgraduate
B
shallbegraduated
C
shallbegraduating
D
shallhavegraduated

题目答案

D

答案解析

暂无解析