Viết lại câu:
1.Couldn't you have got a bus to the station.
->Wasn't it possible for you to get a bus to the station
2.In a few countries the whole of the population only enjoy reasonable standard of living.
->Only a reasonable of living is enjoyed by the whole of the population in a few countries
3.I'm sorry.I couldn't help him.
->I wish i could help him
4Since she was not certain of the way,she asked a policeman.
->Not being certain of the way , she asked the policeman
5.She wanted to know if he had studied French.
->She asked him :" Have you studied French?"
6.The children will go swimming if it's sunny.
->Unless it's sunny, the children won't go swimming
7.''Bring your swimming things in case it's sunny''
->He told me to bring my swimming things in case it was sunny
8.I haven't been to Bristol for three years.
->The last time i went to Bristol three years ago
9.Tim will be eighteen next week.
->It's Tim's eighteen birthday next week

1.Couldn't you have got a bus to the station.
->Wasn't it possible for you to get a bus to the station?
2.In a few countries the whole of the population only enjoy reasonable standard of living.
->Only a reasonable standard of living is enjoyed by the whole of the population in a few countries
3.I'm sorry.I couldn't help him.
->I wish I could help him
4Since she was not certain of the way,she asked a policeman.
->Not being certain of the way, she asked a policeman
5.She wanted to know if he had studied French.
->She asked him " Have you studied French"
6.The children will go swimming if it's sunny.
->Unless it's sunny, the children won't go swimming
7.''Bring your swimming things in case it's sunny''
->He told me to bring my swimming things in case it was sunny
8.I haven't been to Bristol for three years.
->The last time I went to Bristol was three years ago
9.Tim will be eighteen next week.
->It's Tim's eighteenth birthday next week
10.You can leave only when I tell you.
->Until I tell you can't you leave