错的请给出正确答案并告诉我哪里错了．有不同改法的也请写出来　

1,,It took the man five years to practise speaking English.（同义转换）
答：1,The man spent five years practising speakig English.
2,He spent five years to practise speaking English.

2,"Did you sleep well last night?"David asked her（改为同义句）

3,H can finish his work at 12 a.m.. It's 11a.m. now.
（改为同义句
答：1,He can finish his work in one hour
答：2,He is able to complete his work in an hour.

4,This is the most interesting film I have ever seen（改为同义句）

5,She didn't know what could be done（同义句）
答：1,She had no idea what she could do .
2,She didn't know what to be done

6,If you don't work harder, you will fail in the exam（同义句）
答：
1,Work harder,or you will fail in the exam.
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2,You will fail the exam ,without work harder

7,Does Tom's mother have to make him tidy his room?
（被动语态）
答：Is Tom had to make to tidy his room by his mother?

8,I asked Dandy ,"How long will you stay here?"（间接引语）
答：1,I asked Dandy how long she would stay there.
2,I asked Sandy if she will stay here

9,She couldn't win the game if they didn't help her
　（同义句）
答：
1,She couldn't win the game without their help.
2,Help her ,or she couldn't win the game
3,Help her,or she would fail the game
4,Help her,or she fail thegame

10,Do you like playing football?"Tom asked me(
间接引语）
Tome asked me if I like playing football.

11,We found it hard to finish the work in such a short time（宾语从句）
答：We found that it is hard to finish the work in such a short time.

20,His roommate can hear him sing loudly at the bath time（被动语态）
答：He can be heard to sing loudly at the bath time by his roommate.
He can be heard loudly by his roommate
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21,Some of the suits are too big and the others are too small（同义句）
答：All of the suits are far from good suitable regular size.


22,My friend went to Bejing last year .She is still in Beijing now（同义句）
答：My friend has gone to Beijing since last year.

23,We had a very nice time（感叹句）
答：What a very nice time we had!!
How nice the time we had is!

2.Divid asked her if she slept well the last night.
3.答1应将one改为an
4.I have never seen such an interesting film before.
5.也可以是She didn‘t know what to do.
6.答2应将work改为working
还有一种是Work harder，and you won’t fail in the exam.
7.不对，应该是Does Tom have to be made to tidy his room by his mother？
8.答2不对
9.答2，3，4都不太好
10.将like改为liked
11.将is改为was
21.应该是The suits are either too big or too small.
22.将has gone to 改为has been in
23.答2将is改为was