$I$

6. C. that

7. A. compost

8. B. away

9. C. burn

10. B. are thown away

$II$

1.     It’s good for Nam to do his homework

2.     It’s bad to lie parents

3.     It’s dangerous to climb the tree

4.     It’s lucky to have a notebook

5.     It’s nice to get good marks

$III$

1. It’s not difficult to learn English 

2. It’s really good for our health to do morning exercises regularly

3. The milkman was bitten by the dog yesterday

4. I will be given a big present on my next birthday by Hoa

5. We have studied Japanese for two years

6. My mom hasn’t written to her sister since last Christmas

7. Millions of car tires are beig thrown everyday

8. Tea can’t be made with cold water

9. It’s so dangerous to go out alone at night

10. The test is being done in the testing room by the children

$@bangtann$

III. 1.It isn't difficult to learn E

2.It is really good for your health to do morning exercises regularly

3.The milkman was bitten by the dog yesterday

4.I will be given a big present on my next birthday by Hoa

5.We have studied J for 2 years