, I think, and all the problems could be settled. A. If you make more efforts B.
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_______, I think, and all the problems could be settled.
A. If you make more efforts B. Making more efforts
C. A bit more effort D. To have made more efforts
试题答案
C
解析:
句中有并列连词and，故应选择C项。其中名词短语相当于一个祈使句，完整的句子为：Make more efforts, I think, and all the problems could be settled.如选A , and要删去。