3 years,I decided to set up my own

3 years,I decided to set up my own
business.
A.Worked
B.Working
C.Having worked
1._____ as a salesgirl in a department store for 3 years,I decided to set up my own
business.
A.Worked
B.Working
C.Having worked
D.To work
为什么选择C 求详解
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二外男在深圳 幼苗

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C ing分词作伴随状语,根据与主句的时间前后关系,选用having done.

1年前

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