Question

Answer 1

21. When did you start riding a bicycle?

22. When did he write to you?

23. How long is it since he last talked to you?

24. How long is it since you last telephoned him?

25. It's the first time we have eaten this kind of food.

26. Because of Hoa's richness, she could buy that house.

27. Since the price is cheap, my wife insists on buying the TV.

28. In spite of the heavy rain, we still went to school.

29. Despite being the boss, Trang works as hard as her employees.

30. Although he has health problems, he is always smiling.