3.left   4.was   5.told   6.didn't have   7.didn't know      8.bought

IV. 

1. most delicious

2.busier

3.the smallest

4.more modern

5.most expensive

6.bigger

7.best

8.worse

9.noisiest

10.most historic

V. 1.Where is Linh reading books?

2.What are the boys doing in the yard?

3.When do the girls do the aerobic?

4.How often do you stay up late on Sat night?

6.What did they have for breakfast this morning?

VI. 1.1956       2.Black and white only.           3.30 minutes or a full hour.

VII 1. We turned to D.C because we wanted to see Tom and Jerry.

2.Mai swims badly.

3.I like sports although I don't watch them much.

4.Hoa's favorite sport is volleyball.

5.the largest

6.I haven't seen Nam for 2 months.

1. the most delicious

2.busier

3.the smallest

4.moderner

5.most exensive

6.bigger

7. best

8. worse

9. noisiest

10. most historic

VI

1. the first Austalian TV broadcast was in 1956 

2. The pictures on a TV then were black and wwhite only 

3. episodes in TV last for either 30 minutes or full hour

VII

1.Because she wanted to watch Tom and Jerry, she turned to Disney Channel

2.Mai swims badly

3. Although i like sports, i don't watch them much

5. I haven't seen Nam for 2 months