Choose the correct options to complete the sentences

1. This author
   [wrote|has written|has been writing] children's books for many years; a lot of people know and read them.
2. We
   [played|haven't played|haven't been playing] this game for a long time, I don't remember its rules well.
3. What are you laughing at? What
   [said|have I said|have I been saying]?
4. I
   [knew|have known|have been knowing] Peter since we went to school together.
5. The young people
   [didn't meet|haven't met|hasn't been meeting] for two years and are happy to see each other again.
6. The family
   [lived|have lived| had been lived] at the seaside since after the war.
7. A number of old trees are lying on the ground. It's clear that a very strong wind
   [blew|has blown|has been blowing].
8. Jane looks tired, I think she
   [worked|had worked|has been working] in the garden.
9. She'd like to travel around Russia. She
   [had|has had|has been having] this idea since she first saw Lake Baikal.
10. They
    [were|have been|have been being] friends for many years and are very devoted to each other.
11. What
    [has influenced|had influenced|has been influencing] your decision to become an engineer?
12. Scientists at home and abroad
    [studied|have studied|have been studying] the problems of ecology for many years now.