【題目】We don’t doubt ________ we will complete all the project before the year 2013.

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

【答案】C

【解析】doubt作動(dòng)詞,后跟賓語(yǔ)從句,在否定句中,跟that引導(dǎo)的賓語(yǔ)從句;在肯定句中后跟if/whether 引導(dǎo)的賓語(yǔ)從句。

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