1He has learned English for ten years
2Chilren have learned dancing two years ago
3How long has he been an English teacher?
4The farmer hasn't been in farm for half an hour
5I have known her since the day before yesterday.
1He has learned English for ten years
2Chilren have learned dancing two years ago
3How long has he been an English teacher?
4The farmer hasn't been in farm for half an hour
5I have known her since the day before yesterday.