题目内容

He refuses to invest _____ companies without a good social record.

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

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I'm afraid you will have to wait a while for the meeting to begin. ____the meantime, you may go over your speech again.

A. on
B. by
C. in
D. to

“小康”一词最早出现在我国古代典籍()当中。

A. 《论语》
B. 《周易》
C. 《诗经》
D. 《楚辞》

unfortuately, the hat I had just bought was no longer ______ fashion.

A. in
B. out
C. to
D. up

You ought to pay more attention______ the quality of these goods.

A. in
B. to
C. up
D. down