Here are the correct forms of the words in brackets:
1. In Viet Nam, education is free for primary students.
2. The national language in Viet Nam is Vietnamese.
3. The children are playing happily in the school yard.
4. I disagree with you. You are wrong.
5. Mina is very creative She likes to draw pictures. She always has lots of new ideas.
6. Nhan has a pen pal in France and they write to each other regularly
7. Maria is the best student in my class.
8. My grandmother can read well without glasses.
9. He studies excellently He is the top student in my school.
10. His study result is excellent. He is the top student in my school.
11. The students were carefully prepared for the national exams.
12. We wish to get a scholarship to study in Great Britain.