That's the reason______Ann could not do her joB.
A.what
B.of
C.because
D.why

A.A.what
B.of
C.because

【参考答案】

D
解析：这句话的意思是说，这就是Ann不能做工作的原因。先行词是the reason，后面为定语从句，先行词在......

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