She was in London for two years, ______ as a tourist guide. ( )(本题2.0分) A、 to work B、 working C、 to have worked D、 having been worked

She was in London for two years, ______ as a tourist guide. ( )(本题2.0分)
A、 to work
B、 working
C、 to have worked
D、 having been worked

出自：华北水利水电大学混凝土结构设计原理

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