=>
III/
1. D
2. A
IV/
1. eating
2. like
3. come
4. visited
V/
1. She said Peter should improve on his English
2. She told me to turn off the light.
3. I like drawing, reading and swimming.
4. He told me if I could give Nam a book.
VI/
1. We turned off the lights so as not to waste electricity.
2. I'll write to Mai so as to invite her to my birtday party.
3. I am happy that I passed the exam.