Hoàn thành chuỗi phản ứng :

a) Cu => CuO =>CuCl2 =>CuSO4 =>Cu(OH)2 =>CuO =>Cu

b) P=>P2O5 => H3PO4 =>Ca3PO4

viết lại câu bằng "I wish"

1. I speak English badly

2. He can not swim as well as his friends

3. She has to work on Sunday every week

4.They are afraid of ghosts and monstrers

5. I do not know much about him

6. We would like to live in HCM city

7. I am sorry . I am not well now

8. I do not have time to help you do this work

9. I would like Tom give up smoking

10. She does not have a new dress for the New Year school is Day

viết lại câu :

1. He drives faster than I do . => He is ...................../ I am ...................../I do not ..........................

2. No one can run faster than me . => I am ...........................................

3. I do not have any bigger problem than pronunciation . => My ...................................

4. No restaurant in the city is better than that one . => That restaurant is .............................

5.My kitchen is smaller than yours .=> Your kitchen is ..................../ My kitchen is ....................

6. He drives more carefully than he used to . => He does not drive........................

7. Jane can swim farther than I can . => I can not ............................

8. This exercise is easier than that one . => This exercise is .................../ That exercise is ...............................

9. A play is often longer than a film => A film is ............................./ A film is not ..................................