问题 选择题

(2013·天津新华中学二次月考)________ several times,he still couldn't understand how to operate the machine.

A.Telling

B.Having told

C.To be told  

D.Having been told

答案

答案:D

句意:尽管已经被告知好多次了,他还是不能理解怎么操作这台机器。根据句意可知,tell和he之间为逻辑上的动宾关系,应用v.­ed形式;同时,被告知的动作发生在understand之前,应用完成时,故选D。

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