从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
1. China’s youths topped a list of calculating abilities, but ranked last on imagination and 5th from _____bottom for creativity, according to an education survey of 21 countries and regions.
A. the; the B. an; the C. /; / D. /; the
2. The peace talk is an important development on the peace process, we have all been waiting for, for a long time.
A. one B. what C. it D. that
3. In order to finish the work on time, the man in charge decided to some more workers．
A. give up B. take on C. look after D. take up
4．I have battled with my whether I should keep the extra money given to me or return it to the seller．
A. consciousness B. identification
