单选题 Only under special circumstances ______ to take make-up tests.
  • A. are freshmen permitted
  • B. freshmen are permitted
  • C. permitted are freshmen
  • D. are permitted freshmen
【正确答案】 A
【答案解析】[解析] 由only引导的状语only under special circurnstances放在句首，主句必须用部分倒装语序。