III.
1. simplify [v] làm đơn giản
2. memorial [n] đài kỉ niệm
3. competition [n] cuộc thi
bravery [n] lòng dũng cảm
4. reference
reference book: sách tham khảo
5. instructor [n] người hướng dẫn
6. relationship [n] mối quan hệ
7. successful [adj] thành công
8. permission [n] sự cho phép
9. advertisement [n] quảng cáo
10. service [n] dịch vụ
IV.
1. two hours to finish my report yesterday
2. is capable of learning all that in one day
3. can't do all the housework in two hours
4. can't ride a bike
5. possible for a little child to answer this question
