37) How long have she lived in Danang?

When did she come to live in Danang?

38) He hasn't smoked for 2 years.

He last smoked 2 years ago.

39) I have learnt French for 3 years.

I started learning French 3 years ago.

40) This last time Tom came back to his hometown was 5 years ago.

Tom hasn't returned to his hometown for 5 years.

41) He started working as a teacher 6 months ago.

He has been working as a teacher for 6 months.

42) It has been 3 years since we first went to Japan.

We have been to Japan for 3 years.

43) I last had my hair cut in June.

I haven't had my hair cut since June.

44) The last time we met was 2 years ago.

We haven't seen each other for 2 years.

45) It has been a long time since we last called each other.

We haven't called each other in a long time.

46) When did you have 10 scores in Math?

How long ago did you have 10 scores in Math?

47) This is the first time I had such an exciting trip.

I have never had such an exciting trip before.

48) I haven't seen Anna for 10 days.

The last time I saw Anna was 10 days ago.

49) Today is Sunday. I haven't taken a bath since Thursday.

It is 4 days since I last took a bath.

50) I haven't met her for 5 days.

The last time I met her was 5 days ago.