—I wonder how much you charge for your services.—The first two are free ________ the third costs $30

题目简介

—I wonder how much you charge for your services.—The first two are free ________ the third costs $30

题目详情

—I wonder how much you charge for your services.
—The first two are free ________ the third costs $30.
A.whileB.untilC.whenD.before
题型:单选题难度:中档来源:不详

答案

A
while是并列连词,表示对比,意为“而”。

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