题目

—How do you deal with the disagreement 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, made 答案：B 解析: key to(…的关键)中 to 是介词，应接动名词；又因名词 demand 与 make 是被动关系(make demands 提出要求)，另有 by 这一标志词暗示，用过去分词作定语。

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