2. 外语
  3. Mr. White works with a chemicals import ＆ export company, but he_________for this industrial fair, since he is on leave.

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

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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 语法规则。之所以用D而不用C，因为句子中有since从句表示原因。
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专业英语四级

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