题目内容
—I wonder how much you charge for your services.
—The first two are free the third costs $30.
A. while B. until C. when D. before
A
【解析】试题分析:考查连词辨析。A然而;B直到……;C在……的时候;D在……之前。只有A选项表转折。句意:前两个免费,但是第三个要收30美元。故选A。
考点:考查连词辨析
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