题目内容

—Is Bob still a volunteer?

—No, but he _____. He worked for the 2008 Beijing Olympic Games.

A．used to B．used to be

C．used to do D．was used to

 

B

【解析】

试题分析：考察省略句。used to do意为过去做某事。句意：—Bob还是志愿者吗？—不是，但他过去是的，他曾经做过第2008届奥运会的志愿者。省略句通常省到be动词或情态动词为止，此处的动词应为问句中的is。故选B

考点：考察省略句

 

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