2. Lan is reading a book while her brothers are watching TV.
3. Tuan arrived to school when the school drum sounded.
4. My friend and I were here last week.
5. I had lunch at 11.30 yesterday afternoon.
6. Nga has stopped her works for 2 hours.
III.
1. for
2. at
3. since
4. at
5. on
6. in
- $Answered_{}$ $by_{}$ $thieukhue_{}$ -