题目

—How do you deal with the agreement between the company and the customers? —The key______the problem is to meet the demand ______by the customers. A.to solving;making                          B.to solving;made C.to solve;making                              D.to solve;make 答案：B 解析: 前空key to...中to为介词，后应接名词性的词语；后空是过去分词作定语。

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