Resposta :
1 - A) I have been (to be) in US once in my life.
B) He saw (see) the professor yesterday.
C) When I was a child, I played (play) a lot in the streets with other kids.
D) I don't know when, but we have already talked (already talk) to each other.
E) Because we haven't slept well (don't sleep well), yesterday was ( to be) a tough day.
F) She has just payed (just pay) the bills.
G) We haven't met (not meet) yet.
H) They had lunch ( have lunch) together last week.
2 - A) We have never been to US.
B) Has she ever visited your country?
C) They haven't finished painting the house yet.
D) It has been already said.
E) He has just sent me a message.
F) Nobody has never tried to do it before.
G) This it the first time we have ever seen each other
3. A) Yes, we have seen it.
Have you seen it?
B) No, she hasn't been there.
Has she been there?
C) Yes, they were friends of my sister.
Were they friends of your sister?
D) Yes, he was a student at that time.
Was he a student at that time?
E) No, he has gone to Italy, not to France.
Has he gone to France?
F) No, she was not in a good mood.
Was she in a good mood?
G) No, we haven't met yet.
have you met yet?