Bài 1.
1. C (âm /əʊ/, còn lại /ɒ/)
2. D
3. B (âm /ei/)
4. D
5. A
1. A (climate - bài trọng âm)
2. A
3. B
4. D
5. A
Bài 3.
1. meet => met
2. were => was
3. go => went
4. don't => didn't
5. had seen => saw
6. another => other
7. had seen => saw
8. strangely => strange
9. an => the
10. had => has
Bài 5.
1. enjoyment
2. friendliness
3. optional - compulsory
4. improvement
5. understood