Choose the correct preposition . I have studied English ___ three years . a)since b)for...

Choose the correct preposition .
I have studied English ___ three years .
a)since b)for c)in
2)I think I'm good ___English
a)in. b)at. c)on
3)I am interested___ all the subjects.
a)in. b)on. c)about
4)We study ___ school on 115
a)on. b)about. c)in
5)There are many places ___ interest in my town
a)of. b)about. c)in
6) I rely greatly ___my friends
a)for. b)on c)in
7)And I care
a)about b)for c)to them
8)my palfriend lives __ the country
a)for b)at c)in
9)I often write letters __him every month
a)about b)for c)to
10)I always look forward __getting letters from him
a)at b)for c)to