myhomework has already been fishied改为否定句?

英语初三一般完成时
现在完成时基础练习（1）
I.用所给词的适当形式完成句子.
1.I________myhomework already.(finish)
2.You won't knowif it fits you until you________it on.(try)
3.It's said thathe________sent to Australiato improve his English.(be)
4.The livingstandard of the people in Nanjing ________ since 1983.(rise)
5.Tom________for40 years.(marry)
II.同义句转换.
1.I have alreadybeen here for 5 years.I have beenhere________5 years________.
2.I married overtwo years ago.
I________ ________married________over twoyears.
3.Where did yougo just now?Where________you________?
III.改错.
1.He hasborrowed the magazine for days.
2.Mr Li has cometo this city since 1990.
3.How long hashe joined the army?
4.The film hadbegun for ten minutes when I arrived.
(2)
A)选用have,has填空:
1.I _______ told him the news.
2.She ________ come back from school.3.You ________ wonthe game.
B)按要求改写下列各句:
4.They have bought a computer.(改成否定句)
_________________________________________
5.He has lost his book.
(先改成一般疑问句,再作肯定与否定回答)
_________________________________________