单选题Theteacherseldomletanopportunityto

单选题 The teacher seldom let an opportunity to teach his students or to help them make up for the days of schooling they had missed ________．A.passB.passingC.to passD.being passed

A解析考查非谓语动词作宾补。本题的难点在于句子结构复杂。本题中的an opportunity to teach his students or help them makeup for the days of schooling they had missed作let的宾语，其中to teach his students or help them make up for the days of schooling they had missed作opportunity的后置定语，同时they had missed作the days of schooling的定语。由此可知pass是宾语补足语，在let后的宾补用动词原形。

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