1)Mary hasn't worn that dress since she left school
-> Mary last........................
2) He hasn't seen her sister for 2 years
-> The last time..........................
3) I haver never been to this restaurant before
-> This is..............................
4) We started learning English 4 years agos
5) This is the first time Maryam has never visited Viet Nam
-> Maryam has.................
6) He hasn't smoked for three years.
-> He stopped...............................
1)Mary hasn't worn that dress since she left school
-> Mary last wore that dress when she left school
2) He hasn't seen her sister for 2 years
-> The last time he saw her sister was 2 years ago
3) I haver never been to this restaurant before
-> This is the first time I've been to this restaurant
4) We started learning English 4 years agos
-> We have learnt English for 4 years
5) This is the first time Maryam has never visited Viet Nam
-> Maryam has never visited Viet Nam before
6) He hasn't smoked for three years.
-> He stopped smoking three years ago