题目内容
________ I can’t understand is ________ she wants to change her mind.
A. What; why B. Which; bow
C. That; why D. What; because
A
what引导主语从句,且作understand的宾语,后一空表示原因。

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题目内容
________ I can’t understand is ________ she wants to change her mind.
A. What; why B. Which; bow
C. That; why D. What; because
A
what引导主语从句,且作understand的宾语,后一空表示原因。