Mr. White works with a chemicals import & export company, but he______for this i

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问题 Mr. White works with a chemicals import & export company, but he______for this industrial fair, since he is on leave.

选项 A、has worked
B、works
C、has been working
D、is working

答案 D

解析时态辨析题。题意：“怀特先生本来是在一家化学品进出口公司上班，但是他却乘休假来这里为工业展览的事忙活着。”句中描述的是现在的情况，所以用现在进行时。

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