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The teacher didn't begin the class ________ all the students.


  1. A.
    until; stopped to talk
  2. B.
    before; stopped talking
  3. C.
    while; stopped to talk
  4. D.
    because; stopped talking
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科目：初中英語 來源：外研社七年級英語(上)練習題 題型：016

My mother is a teache in ________ university．

[　　]
A．

a

B．

an

C．

the

D．

/

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