单项选择题

Could you come（）to the development workshop for a second?

A.up
B.on
C.down
D.over

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单项选择题

A. to negotiate with you
B. has done damage to our reputation
C. to make this product possible
D. what seemed an impossible problem

单项选择题

Because we can’t find a compromise（）

A. we’ve ever given before.
B. but I got nothing out of it.
C. and there are two hundred and sixteen thousand employees worldwide.
D. I am afraid we can go no further.

单项选择题

We very much appreciate your efforts（）.

A. our production costs must be no more than 15 percent
B. has done damage to our reputation
C. to negotiate with you
D. to make this product possible