题目

       ，and the problem would be straightened out. A.A bit more effort                                                 B.Having a little effort C.If you have a bit more effort                          D. There being a little effort 答案：A 解析: 考查句型：名词短语/祈使句+and/or+结尾句。如选C项，应去掉题干中的连词and。

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