1.No one's seen Mark FOR five weeks
2. "How long have you been waiting?" SINCE quater past three
3. I went to Greece many years AGO, when I was still a student
4. He last spoke to me four years AGO
5. Have you put on weight SINCE you stopped smoking?
6. John has been working FOR hours. He must be tried
7. Mike's had that old car FOR ten years
8. My dad has felt much better SINCE he started going for walks
9. This is the first time i've seen you SINCE the wedding
10. The documentary was made over ten years AGO
1. My oldest friend and I HAD(have) a lot in common until she started mixing with a different ceowd of people
2. I ENJOYED (enjoy) spending time with you this weekend. thanks for inviting me over
3.We DIDN'T KEEP (not keep) in touch because we lived a long way away from each other
4. We DIDN'T TALK (not talk) about that subject this evening because Ela is very sensitive to that kind of thing
5. She HASN'T SURFED ( not surf)the internet since last week
6.He HAS LOOKED (look)up to his history teacher at school
7. I SPENT (spend)lots of money on slothes this month
8. They HAD FORWARDED (forward)the email message to their teacher but he didn't reply