题目

I'm waiting for my friend.          , I'll go shopping alone. A. If she comes         B. If she won't come    C. If she doesn't come 答案：C 【解析】考查从句的时态。If引导的条件状语从句，主句用将来时，从句用一般现在时。根据句意：如果他不来，我就独自去购物。故选C。

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