问题
选择题
—Where have you been recently?
—I ________ in Beijing on business for a week last month.[ ]
A. have worked
B. was working
C. have been working
D. worked
答案
答案：D
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—Where have you been recently?
—I ________ in Beijing on business for a week last month.[ ]
A. have worked
B. was working
C. have been working
D. worked
答案：D