【題目】I’m sure he will help her if he ________ her.

A.knowsB.will knowC.is to knowD.can know

【答案】A

【解析】

考查動(dòng)詞時(shí)態(tài)。句意：如果他認(rèn)識(shí)她，我相信他會(huì)幫助她的。分析句子可知，if引導(dǎo)的條件狀語從句，主句將來時(shí)，從句一般現(xiàn)在時(shí)。故選A項(xiàng)。

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