It isn’t quite         whether the teacher will collect the homework by Friday, so you needn’t hurry.
A.sureB.rightC.certainD.exact
C

試題分析:考查形容詞:A. sure當(dāng)然,主語是人,B. right正確的,C. certain確定的,主語可以是人或it,D. exact確切的,這是個(gè)句型:It’s certain that…,肯定的是…,句意:是否老師會(huì)在周五前完成作業(yè)還不確定,所以我們不要著急。選C。
點(diǎn)評(píng):Sure與certain是近義詞,均作“一定的,確信的”等解。兩者用法相似,多數(shù)情況下可換用,但有時(shí)不能換用。It is…that結(jié)構(gòu)中只能用certain,不能用sure。
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