I. Complete the second sentence so that it has a similar meaning to the first.
1. You aren't allowed to make noise in the library.
You mustn't .............................................................
2. It isn't necessary for you to go to school so early.
You don't ................................................................
3. It is a good thing for you to keep the house clean and tidy.
You ought ..............................................................
4. I had a good time at the party last night.
I enjoyed .............................................................
5. Must he leave now?
Does he ............................................................
6. Playing with matches is very dangerous.
It's very dangerous............................................
7. You must stay in bed because of your illness.
You must stay in bed because you ..............................
8. It isn't necessary for you to water that tree every day.
You don't have ......................................................
9. He stays up too late and he is always tired the next morning.
He should go ....................................................
10. It is dangerous to put a knife into an electrical socket.
Putting a knife ...............................................
1. Nobody helped Thanh repair the bike.
=> Thanh repaired the bike by himself.
2. Putting a knife into an electrical socket is dangerous.
=> It is dangerous to put a knife into an electrical socket.
3. It isn't necessary for you to set off early.
=> You don't have to set off early.
4. Would you like me to call Linh?
=> I'll call Linh for you.
5. I had a cat once, but I don't any more.
=> I used to have a cat.
6. We started living here fifteen years ago.
=> We have lived here fifteen years ago.
7. I last wrote to my uncle in July.
=> I haven't written to my uncle since July.
8. It is a long time since we became close friends.
=> We have become close friends for a long time.
9. Tam doesn't type as fast as she used to.
=> Tam used to type fastly.
10. Nhung will be fifteen years old next week.
=> It is Nhung's fifteen-year-old next week.