Put the verbs into the correct tense, past simple or present perfect
1. ____________(you/ ever/ be) to the United States?-No, but I_____________(be)to England and France
2. When we were in Canada, we______(go)skiing almost everyday
3. When_______(you/meet) your wife?-2 years ago
4. Peter______(not phone)yet. I'm still waiting
5. I_____(know)Helen since we were at school together
6. Mu uncle____________(live) in Berlin in 1999
7. We___________(not see)Beth at Mike's house yesterday moring
8. Do you like this picture? my uncle_____(paint)it
9. Mr Dass________(leave)for New York late last night
10. Mr and Mrs Grey_________(teach)French here for over five years

mọi người cho em xin thêm lời giải thích của câu trả lời nữa với ạaa , em cảm ơn !!!