Szerintem ezek a megoldások
1,
B haven’t
A saw
B met
A haven’t met
B was, went
A Has he been

2,
1. Where did he buy his hat?
2. Who is your favourite actor?
3. How many languages can she speak?
4. When do you usually finish the work?
5. Why are they studying?
6. Which kind of music do you like?

3,
1. Marco has fallen in love again.
2. We haven’t bought any CDs recently.
3. Have you ever eaten Moroccan food?
4. Have your parents been to Russia before?
5. Sally hasn’t heard John sing before.
6. Has anyone found my mobile phone?
7. I have appeared on TV twice.

4,
1. thought
2. fallen
3. drunk
4. known
5. paid
6. sung
7. met

5,
1. made
2. written
3. won
4. left
5. worn
6. broken
7. driven

6,
1. journalist
2. garage
3. tall
4. nephew
5. armchair
6. ceiling

7,
1. go
2. re
3. pe
4. lax
5. bro

8,
1. first
2. say
3. many
4. happy
5. profession