СРОЧННОООООООООО!!!!!! :))))

B. 1. just (только что)
2. for (имеется ввиду период)
3. already have learnt
4. has arranged
5. has just given 
6.since

A. 1) have heard
2) have read
3) have watched
4)has attended
5)has learnt
6)has bought
7)have seen
8)has had

1. I have heard 
2. I have read
3. I have watched
4. Harry has attended
5. He has learnt
6. He has bought
7. We have seen
8. Harry has had
1. Martin has just finished his work.
2. She's been a successful magician for many times.
3. I'm reading a book about magic and I have already learnt lots of tricks.
4. My mother has arranged magic lessons for me.
5. Paula is proud of Frank because he has just given his first performance as a magician.
6. Mrs Kent has been a teacher here since 1978.