Great changes have taken place in that school. It is no longer______it was 20 years ago, ______ it was so poorly equipped.

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问题 Great changes have taken place in that school. It is no longer______it was 20 years ago, ______ it was so poorly equipped.

选项 A、what;when
B、that;which
C、what;which
D、which;that

答案A

解析 第一个从句是表语从句并在从句中作表语,所以用what;后面是一个when引导的定语从句,其先行词是20 years ago。
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