Mary caught a cold_________ is why she didn't come todayA.This B.It C.There D.That
问题描述：
Mary caught a cold_________ is why she didn't come today
A.This B.It C.There D.That
答
D,why she didn't come today is that Mary caught a cold .
答
d
答
D
that做主语的引导词。
答
D. That
that在这里有一个指代前面Mary caught a cold这件事的作用
答
D 代替‘感冒’那件事.
分析：A 一般不用来代替前面的事；B 代替前面提到的东西； C 那里
玛利感冒了,那就是她为什么今天不来的原因.
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