Giải giúp mình với ạ

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 

Type 2: 

How long + has/have + S+ V3/ed?

--> When + did + S + V1?

--> How long is it + since + S+ V2/ed ?

Type 3:

S + has/have + V3/ed + for/since + time 

--> S + started / began + to V / Ving 

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

Type 4: 

S + has/have + not/never + V3/ed + ... before

--> This/It is the first time + S+ has/have+ V3/ed

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27. The last time I saw him was 8 days ago.

28. It is ... days since I last took a bath. (ghi số ngày từ thứ 2 đến hiện tại) 

29. I have not had a puncture for 2 years.

30. He has not earned any money for 2 months.

31. He hasn't shaved since the day before yesterday.

32. I haven't drunk champagne since my brother's wedding.

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