I , Đánh trọng âm
1. A , realize. B, improve C, possible. D,comfortable
2. A, important. B, especially. C, prefer. D, influence.
3. A, general. B, opinion C, abroad. D, surprise
4. A, comfort B, nation. C, apply. D, moment
5. A, madical B, advise. C, vegetables. D, physical
= 2^2+3^2=13