问题

Mr.White works in an import and export company,but he_____for this industrial fair,since he is on leave.
A:has worked
B:works
C:has been working
D:is working
B:works
C:has been working
D:is working
正确答案是:
同类题型
The English word “survive” _______ “stay alive”.
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________ felt tired but quite happy after________ sports meeting.
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