1. want all the old trees to be cut

2. N/A

3. visited California twice

4. I had all my suits made in London

5. I've never read such an interesting novel like this before

6. He has no intention of going sailing in Huong river with his friends next weekend

7. Wanting to know more about the accident, he asked a lot of people

8. does she sings well but she also dances beautifully

9. We didn't use to be bitten by bees

10. It's essential that he stop smoking in the office

1.They want to cut down all the old trees.

=> They want all the old trees cut down.

2.Would you mind if i didn't tidy the mess?

Is it okay for me not to tidy the mess?

3.It's the second time she has visited California

=> She's visited California twice.

4.All my suits were made in London( had)

=> I had all my suits made in London

5.This is the most interesting novel i have ever read( such)

=> I have never read such an interesting novel before.

6.He isn't going sailing in Huong river with his friends next weekend(of)

=> He's not going sailing in Huong river with the friends of his next weekend.

7.The man wanted to know more about the accident. He asked a lot of people( V-ing)

=> Wanting to know more about the accident, he asked a lot of people.

8.She both sings well and dances beautifully

=>Not only does she sing well but also she dances beautifully.

9.We were never bitten by bees(used)

=> We're used to not being bitten by bees.

10.It's essential for him to stop smoking in the office( that)

=> It's necessary that he must stop smoking in the office.