2. He spends 2 hours to do his homework everyday

S + V(s/es)

3. Because of the heavy rain, we were late for school

4. We used to clean the house

5. I last spoke to her 2 years ago

6. Peter said that he was living with his sister at London then

S + said (that) + S + V(lùi về 1 thì)

7. She hasn't written to her pen pal for 2 months

8. If Na have enough money, she will buy a new computer

If + S + V(s/es), S + will + V(ngmẫu)

9. A new mall will be built here

10. Does Ba play chess most of his time?

11. I wish I could come to your birthday party last night

12. Computer is used in on corners of the world

13. My sister have started learning French since 2 months

14. The last time Lan visited her grandparents 2 months ago

15. If she's strong enough, she will leave the table