30 Has he taught at university since 2014?
31 How long have we collected ancient coins?
How long ago did we collect ancient coins?
How long is it since we first collected ancient coins?
32
How long has Daisy caught fish with her bare hands?
How long ago did Daisy begin catching fish with her bare hands?
How long is it since Daisy began catching fish with her bare hands?
33
How long has Nam done karate?
How long ago did Nam do karate ?
How long is it since Nam started to do karate
34 When did you start taking up badminton?
35 When did Miss Lan lived on her farm?
36 Lan hasn't written a letter to Mai fpr 6 months
Lan last wrote a letter to mai 6 months ago
37 We haven't drunk coffee since last week
We last drank coffee last week
38 The last time they came to visit him was 5 years ago
They last came to visit him 5 years ago
39 The last time She cleaned her room was when she was sick
She last cleaned her room when she was sick
