Nhanh nhanh ạ,,..........

`Đáp` `án:`

29. They haven't played video games for 2 months.

30. She hasn't come to class for 2 weeks.

31. I haven't seen him since I was a student.

32. They haven't visited their hometown since 2020.

33. I haven't spoken to my cousin for two years.

34. She hasn't written to me for two years.

35. I haven't seen my family for two weeks.

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Các công thức đổi HTHT - QKĐ

Type 1: 

S + has/have + not + V3/ed + for/since + time 

--> S + last + V2/ed 

--> The last time + S+ V2/ed + was + time 

--> It is / has been + time + since + S+ (last) + V2/ed