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问题

They were at work when they received _


They were at work when they received _______SOS from _______school, and they immediately stared their police cars.

  • A the, the
  • B a, a
  • C an, a
  • D the, a
参考答案
参考解析:

参考译文:当他们在工作时接到了来自一所学校的求助,于是他们赶紧发动了警车。两空均为泛指,“S”元音开头,前应用an。

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