【单选题】Mr. White works with a chemicals import export company, but he for the industrial fair, since he is on leave.
A.has worked
B.works
C.has been working
D.is working
【单选题】Mr. White works with a chemicals import export company, but he for the industrial fair, since he is on leave.
A.has worked
B.works
C.has been working
D.is working
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