题目内容

【题目】He started to write his essay, safe in the knowledge ________ he wouldn’t be disturbed for a whole day.

A.whetherB.whatC.thatD.when

【答案】C

【解析】

考查名词性从句。句意：他开始写论文，因为他知道他一整天都不会被打扰。分析句子可知，that引导同位语从句，解释knowledge的内容。故选C。

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