=>
1. If we use cars all the time, we will make the air dirty. ( câu điều kiện loại 1)
2. No river in the world is longer than the Nile river. ( câu so sánh )
3. Although I like cartoons, I don't watch them much. ( although S + V : mặc dù)
4. New York is the most interesting city in the world. ( so sánh nhất)
5. Although the "haunted theater" is frightening, children love it.
6. He has never met her before. 
7. Minh is a very good football player.
8.  If people put rubbish into the right bins, they will keep the environment clean.
9. Because he was very lazy, he didn't pass the exam. ( because S +V : bởi vì)

10. I was at the gym last Sunday, but I didn't see you there.

1.If we use cars all the time, we will make the air dirty.

2. No river in the world is longer than the Nile river.

3.Although I like cartoons,I don't watch them much.

4.New York is the most interesting city in the world.

5.Although the "haunted theater" is frightening,children love it.

6.He has never met her before.

7.Minh is a very good football player.

8.If people put rubbish into the right bins,they will keep the environment clean.

9.Because he was very lazy, he didn't pass the exam.

10.I was at the gym last Sunday,but I didn't see you there.

#goodluck