7. will be playing

8. Will be building

9. Will be learning

10. Is buying

11. Are - going to do

V.

1. Will be used in the future

2. Ours

3. Far is it from Vinh to ha Noi city

4. To walk to school when I was a student 

5. Being short, they still love playing sports

6. Eating lots of food, she is still very slim

7. Interested in learning English

8. Nam reads an interesting book, he finishes all his homework

9. Didn’t remember to turn off the TV last night, did you?

10. They didn’t use to go to the cinema every Sunday last year

11. Were so tired of flying from Vietnam to Australia

VI

1. They will be learning English this time tomorrow 

2. Solar energy will be used by many countries in the world 

3. How will people fly from one continent to another?

Sorry nhé mk chỉ biết mấy câu này thôi