She usually types the letter in 20 minutes

1.She usually types the letter in 20 minutes.
2. I often walk to my office in 10 minutes.
3. The flight to Ha Noi lasts 3 hours.
4. They will build a new house in five years.
5. He always has breakfast in 10 minutes.
6. She usually writes the bill in several seconds.
7. The doctor usually examines his patient in 20 minutes.
8. I get to work in half an hour.
9. We usually go to school about twenty minutes by bike.
10. They usually go to Ha Noi about 18 hours by coach.
11. I usually gat there in two minutes.
12. How long do you usually get to Ha Noi by plane?
13. How long does Nam do his homework at home?
14. I usually have to spend 2 hours to finish my homework.
15. She often has to spend 10 minutes to open the door.
16. It takes me about two hours each day to do my homework.
17. The boy spends 3 hours a day learning the lesson.
18. How long do you go to school by bike?
19. I get to work in half an hour.