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按要求完成下列句子，每空一詞(含縮寫詞)。

1．They are English books。(改為單數句)

    ____________English book．

 2．Mary knows his name(改為否定句)

    Mary___________ his name．

3．My father plays soccer every morning．(改為一般疑問句)．

   _________your father ______ soccer every morning?

4．His notebooks are on the desk．(對劃線部分提問)

  ________his notebooks?

5．Is this your watch?(作否定回答)

No，___________________________.