单项选择题

A lot of problems concerning education fee（）at the conference.

A. came out
B. turned up
C. came up
D. steeled down

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单项选择题
We will not attack（）we are attacked; if attacked, we will certainly counter-attack.

A. if
B. when
C. unless
D. even if
单项选择题
--Whom do you want to see at the moment--The man（）Mr. zhang.

A. called himself
B. you call
C. calling himself
D. is called
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