He had a bad cold. _______ is why he didn’t come.

admin2009-01-05  14

问题 He had a bad cold. _______ is why he didn’t come.

选项 A、It
B、This
C、That
D、What

答案C

解析 that可用来指代前文出现过的事物,也可以指代前文提及的事情。因此只有C正确。
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