6.
1 Mai asked to call her at 6 o'clock the next morning.
2 Lan asked me if I was interested in that Language Center.
3 Mrs Chi said they would spend their holiday in Da Lat the next month.
4 The man asked Mr Linh what his son wanted to learn.
5 Hoa said we had to come today.
7.
1 Vinh is always forgets her homework.
2 Do you mind helping me put the chairs away?
3 I'd rather not make any noise.
4 I have never used better computer before.
5 It's ages since he last chatted with his classmates.
6 The last time we saw her was when we left school.
7 My brother enjoys walking in the rain.
8 It's very important to keep the environment clean.
9 Minh has collected stamps since 2000.
10 How about meeting inside the center,at the cafe' corner?