【題目】She is not certain about __________ she has done anything wrong.

A. if B. whether C. that D. What

【答案】B

【解析】

試題分析:考查關(guān)系詞。句意:她對(duì)自己是否做了些錯(cuò)事感到不確定。根據(jù)前面的not certain可知是不確定的態(tài)度,有選擇性。在從句中,在介詞后,只能用whether,故選B項(xiàng)。

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