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，___________________________.