I can see you have put a lot of time(     ) it.

admin2013-02-22  4

问题 I can see you have put a lot of time(     ) it.

选项 A、into
B、on
C、with
D、under

答案A

解析 句意为:我相信你在制定这个计划上一定花了不少精力吧。
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