Odpowiedź :
(a)
I think she is a good teacher.
I literally found a good teacher for her.
(b)
Politicians who age (=get older and older) should retire.
People should stop making comments about politicans' aging.
(c)
The reason for Bill's having not kissed Emma was that he wanted to go out with her (=that was the entry condition).
The reason for Bill's having not kissed Emma was that the was another person that Bill wanted to go out with.
(d)
''he'' refers to John
''he'' refers to Fred
(e)
It is hard for Fiona to study because of her parents (=they are noisy, etc.)
Fiona's parents force her to study a lot.
(f)
Planes that land = landing planes ("landing" modifies "planes")
Landing planes = the activity of lading itself can be dangerous