V.
1. been working for that company for four years
2. been studying Russian since 2000
3. tall enough to join the basketball team
4. too weak to take part in all school activities
5. studied better than Nam
6. in class 7A1 is as clever as Nam
7. spent less money than him
8. as honest as they used to be
9. his students to pay attention to his explanation
10. his students not to waste so much time watching TV
VI.
1. entertainments
2. peaceful
3. relatives
4. noisiness
5. accessible
6. friendly
7. unpleasant
8. difficulty
