IX.

1. My grandfather planted this tree.

2. They haven't collected the rubbish.

3. Are they using recycled paper?

4. Will they build a new school very soon?

5. They do a lot of work every day.

6. They cut down many trees to make paper.

7. They consider English the most international language.

8. They should shut these doors before 5 pm.

9. Pollution from factories has destroyed many lakes and rivers.

10. Hung gave me a beautiful glass on my birthday.

X.

1. It's important to keep the environment clean.

2. The time machine will be shown to the public when it's finished.

3. He was delighted that his aunt sent him a letter.

4. People recycle old car tires to make shoes and sandals.

5. I'm very sad not having been accepted in that group.

Chúc bạn học tốt!

IX.

1. My grandfather planted this tree.

2. We haven't collected the rubbish.

3. Are we using recycled paper?

4. Will they build a new school very soon?

5. He does a lot of work every day.

6. They cut down many trees to make paper.

7. We consider English the most international language.

8. I should shut these doors before 5 pm.

9. Pollution from factories have destroyed many lakes and rivers.

10. Hung gave me a beautiful glass on my birthday.

X.

1. It's very important to keep the environment clean.

2. The time machine will be shown to the public when it is finished.

3. He was delighted that his aunt sent him a letter.

4. People recycle old car tires to make shoes and sandals.

5. I'm very sad not to be accepted in that group.

Chúc bạn học tốt~