She didn’t know she could express her ideas clearly when she was invited to speak at the meeting.A．what B．why C．how D．whether 题目和参考答案——青夏教育精英家教网—

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She didn’t know__________she could express her ideas clearly when she was invited to speak at the meeting.

A．what

B．why

C．how

D．whether

解析试题分析：句意：当她被请去会议上发言时，她不知道她怎样表达清楚。what什么；why为什么；how怎样；whether是否。根据题意，故选C。
考点：考查宾语从句连词的用法。

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