Ответ:

1.  Did you see Paul this week?

2. When has your sister met her boyfriend?

3. What that noise? Did your neighbours buy a new dog recently?

4. i talked to my grandparents on the phone last week

5. So far this week we saw two hilarious films on TV

6. Did your friends buy tickets for the concert yesterday?

7.  My younger sister started school six months ago.

8. Simon was at the beach for hours. I think he's having  a great time there.