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3.After a heated discussion,we still couldn't decide _______ we should do to help the old.(  )
A.whatB.thatC.whenD.why

分析 在经过了激烈的讨论之后,我们还不能决定应该怎么去帮助这位老人.

解答 答案:A
decide后面是宾语从句,从句中do缺少宾语,所以用what.

点评 考查名词性从句时,要分析从句句子成分,如果缺少主语、宾语、表语,一般用what.

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