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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:1774
题文

—Is the dentist at work?
—I'm sorry to tell you he is on __________.

A.an enough holiday long
B.a long enough holiday
C.a holiday enough long
D.a long vacation enough
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—Isthedentistatwork?—Imsorryto