题目内容
Jack ________ for Microsoft for 10 years before he quitted, but now he is working for a mobile phone company.
[ ]
A.has worked
B.was working
C.worked
D.would work
答案:C
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题目内容
Jack ________ for Microsoft for 10 years before he quitted, but now he is working for a mobile phone company.
A.has worked
B.was working
C.worked
D.would work