按要求完成下列句子，每空一词(含缩写词)。

1．They are English books。(改为单数句)

    ____________English book．

 2．Mary knows his name(改为否定句)

    Mary___________ his name．

3．My father plays soccer every morning．(改为一般疑问句)．

   _________your father ______ soccer every morning?

4．His notebooks are on the desk．(对划线部分提问)

  ________his notebooks?

5．Is this your watch?(作否定回答)

No，___________________________.