1. She has taught her children to play piano for 4 years

=> She started taught her children to play the piano 4 years ago.

2.It's a pity can't cook as well as my mom

=> I wish I cook as well aw my mom

3.He doesn't have meals with his family any more 

=> He used to have meals with his family

4. It took me along time to be accustomed to living in the country.

=> It took me long time to get used to living in the country.

5. My school is near my home, so I go to school on foot everyday.

=> My school isn't far my home,so I go to school on foot everyday.

6. I would like my sister to improve her English speaking

=> I wish my sister improved her English speaking

7.Vietnamese people only eat dried candied fruit at Tet
>Dried candied fruit is only eaten by Vietnamese people  at Tet.

1. She started to teach her children to play piano 4 years ago.

2. I wish I could cook as well as my mom.

3. He used to have meals with his family.

4. It took me a long time to get used to living in the country. ( Câu này mk thêm từ " a " trong câu " a long time " nha vì mk thấy hình như b vt thiếu ) 

5. My school isn't far from my home , so I go to school on foot everyday.

6. I wish my sister improved her English speaking.

7. Dried candied fruit is only eaten at Tet by Vietnamese people.