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【題目】We’re not sure _______ there’ll be _______ or not tomorrow.

A. if; rains B. if; rainy C. whether; raining D. whether; rain

【答案】D

【解析】句意:我們不確定明天是否會下雨?疾檫B詞辨析和動詞時態(tài)辨析。ifwhether表示“是否”可換用,但和or not連用時需用whether,可排除AB兩項。tomorrow用于一般將來時,be raining是進行時結構,可排除。根據句意結構,可知選D。

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