题目内容
Mr.Smith works with a mobile phone company, but he _________ for this international meeting, since he is on holiday.
[ ]
A.works
B.is working
C.has worked
D.had worked
答案:B
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题目内容
Mr.Smith works with a mobile phone company, but he _________ for this international meeting, since he is on holiday.
A.works
B.is working
C.has worked
D.had worked