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  • 科目:英语
  • 题型:单选题
  • 难度:容易
  • 人气:1314

– I rang you at about ten o’clock, but there was no reply.
– Oh, that was probably ________ I was seeing the doctor.

A.when B.why C.what D.that
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–Irangyouataboutteno’clock,but