题目

The place _______ the bridge is supposed to be built should be _______ the cross-river traffic is the heaviest.            A. which; where            B. at which; which        C. at which; where        D. which;in which 答案：C 解析: 考查从句。第一空at which引导一个定语从句；第二空where引导表语从句。

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