I/1. household
2. friendly
3. sensibly
4. furnished
5. hopeless
6. friendship
7. height
8. carelessly
9. amazed
II/1. childhood
III/1. at
2. up
3. about
4. up
5. at
6. up
IV/1. Charles doesn't live quite far from his aunt's house.
2. You won't fail the exam unless you study hard.
3. The tortoise was running while the hare was sleeping.
4. Can the little boy take care of himself when his mother is away?
5. You don't need to finish your assignment this evening.
V/1. It took Nam two hours to repaint his house.
2. Lien isn't very fond of doing sport very much.
3. What a beautiful painting!
4. I don't work as hard as my sister.
5. Both my sister and I were late for school this morning.