问题
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
B:was working
C:have been working
D:worked
正确答案是：
同类题型
__________ he does has nothing to do with me.
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I could hear voices but I couldn’t ______ what theywere saying