问题补充:
单选题Whydidyoutakeataxi____youcouldcomeherebybus?A.whileB.unlessC.whenD.until
答案:
C解析本题考查连词when的一词多义。此处When相当于since .How can I help them to understand when they won’t listen to me?其余的选项没有这个用法。【标签】连词一词多义
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