What evens are they talking about? Complete their conversation. Помогите!! Дам

 On holidays I went to a camp. I go there every year.

 How long have you visited the camp?

 I've visited the camp since I was 9.

 Isn't it boring?

 No, it's not. We do a lot of different things there.

 What have you done this year?

 We've sewed soft toys.

 I don't think that's very interesting.

 I'm tired.

 What have you done?

 We've picked up garbage near the river.

 How long have you worked?

 We've worked there for 2 hours.

 You can sing really well.

 Thank you.

 How long have you sung?

 I have sung in the choir for 4 years