III/
1. do
2. obey
3. look
4. catch
5. transport
6. It
7. takes
8. because
9. obey
10. miss
11. break
12. signal
IV/
1. the highest
2. the coldest
3. more convenient than
4. the hottest
5. more modern than
6. the best
7. narrower than
8. the most beautiful
9. more beautiful than
10. hotter than
V/
1. Lan's school has a big library.
2. Lan is very good at Math.
3. What is your favourite subject?
4. What about going swimming?
5. What a delicious birthday cake!
6. What is her date of birth?
7. Lan works fewer hours than Nam.
