单项选择题

______ he studies hard, he will never pass the examination,

A. If
B. Unless
C. Even if
D. Even though
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单项选择题
Tom and I went to the cinema but we weren't able to get tickets for ______．
A．two of us
B．the two of us
C．the second of us
D．second of us
单项选择题
The hero of the story is an artist in his ______.
A. thirtieth
B. thirty
C. thirty's
D. thirties
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