Ответ:

1. A .Haven't seen you for days.

B I went on a holiday last week.

2. A How long have you been watching TV?

B .......and it started 10 minutes ago.

3. A Have you ever tried rock climbing?

B I went rock climbing two months ago. It was great.

4. A Have you had lunch yet?

B I ate a sandwich earlier.

5. A How long has Sue known Ann?

B The met last June.