3. fill in: has/have been in / to, nas / have gone to.
1 a 72.
france?
b: no, i haven't but i'd like to go one day.
2 a: i'm afraid sue and pam can't come with
us. they want to visit their grandmother.
b: she
hospital for a long time, hasn't she?
3 a: how long
mexico?
b: for nearly three years.
4 a do you know where mum is?
b: i think she
the post office to get some stamps.
осень !

1 a 72. - I have been to France.
Explanation: "I have been" is the present perfect tense of "to be". In this sentence, the speaker is saying that they have visited France at some point in the past.

b: No, I haven't but I'd like to go one day.
Explanation: This is a response to the previous statement. The speaker is saying that they have not been to France yet, but they would like to visit in the future.

2 a: I'm afraid Sue and Pam can't come with us. They want to visit their grandmother.
Explanation: The speaker is saying that Sue and Pam cannot come along because they want to visit their grandmother. "Want" is used to express a desire or intention.

b: She has been in the hospital for a long time, hasn't she?
Explanation: The speaker is referring to a specific person (she) who has been in the hospital for a long time. "Has been" is the present perfect tense of "to be", indicating an action that started in the past and continues into the present.

3 a: How long have you been to Mexico?
Explanation: The correct sentence should be "How long have you been in Mexico?" The speaker is asking about the duration of time someone has spent in Mexico.

b: For nearly three years.
Explanation: The speaker is responding to the previous question and stating that they have been in Mexico for almost three years.

4 a: Do you know where mom is?
Explanation: The speaker is asking if the listener knows the location of their mom.

b: I think she has gone to the post office to get some stamps.
Explanation: The speaker doesn't have definite knowledge of their mom's whereabouts, but they think she has left for the post office to buy stamps. "Has gone" is the present perfect tense of "to go".

In summary, the conversation involves discussing past experiences and current actions using the present perfect tense. The main points of grammar include using "have been" to talk about past visits, using "has/have been in" to indicate a person's location, and using "has gone" to talk about someone's recent action.