Rewrite the following sentences as required(根据所给要求，改写下列句子。每空格限填一词)：

1．Tell Harry the news when you see him，please．(改为否定句)

   _______ _________Harry the news when you see him，please．

2．Mr. Smith has taught in our school for three years．(对划线部分提问)

_________ ________has Mr Smith taught in our school?

3．Yao Ming is an excellent Chinese basketball player．(改为感叹句)

   ________ ___________excellent Chinese basketball player Yao Ming is!

4．Junior 3 students began to learn chemistry a year ago．(保持句意基本不变)

  Junior 3 students________ learned chemistry_________ a year．

5．The terrible earthquake destroyed thousands of houses in that area．(改为被动语态)

Thousands of houses in that area ________ by the terrible earthquake．