In my opinion, contain wild animals as pets this isn't very correctly. I believe that wild animals must live, where they are adapted to the environment.
(Можно еще что-то добавить : I think...
a
2 has chosen 3 am packing 4 am leaving 5 has booked 6 have been waiting 7 have finished 8 have borrowed 9 am becoming
b
1 present perfect (has chosen) 2 present perfect continuous (have been waiting) 3 present continuous (am packing) 4 present continuous (am becoming) 5 present continuous (am leaving)
1 have been
2 ago
3 came
4 has been doing
5 decided
6 have just asked
7 hasn't decided
8 has never lived
9 has never travelled
10 would be