Đề: chuyển những câu sau đây thành thì hiện tại hoàn thành

Đề: chuyển những câu sau đây thành thì hiện tại hoàn thành
Giúp em với ạ em hứa sẽ đánh giá 5 sao
1.This is the most impressive country that I have visited
->I have ..
2.This is the longest expensive I have ever been given
-> I have..
3.These are the most wonderful parks we have been to.
-> We have..
4.These are the best students he has ever taught
-> He has.
5.He has never met such a beautiful lady
-> He is
6.We have never met a tablet person
->She is
7.How long is it since they got to know each other?
-> When.
-> How long..
8.How long is it since you started living here?
-> When..
-> How long
9.When did she buy the house?
-> How long is..
10. How long has Peter learned English?
-> When..
-> How long