题目内容

【题目】Anna was in Inner Mongolia for two years, ____ as a volunteer teacher.

A. having worked B. working C. worked D. to work

【答案】B

【解析】

试题分析: 考查非谓语动词 。句意:安娜已经来内蒙两年了,在这做一个志愿教师。Working做伴随状语,故选B项。

考点 : 考查非谓语动词

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