1.We sometimes argue about /to ___ 2.It's difficult to concentrate in/on___ 3.It isn't necessary to pay of/for 4.I once dreamed about/with___ 5.I don't believe of/in___... 6.I try to/for

1 We sometimes argue about movies

2 It is difficult to concentrate everything in one place

3 I don't have to pay for it

4 I once dreamed of my future.

5 I do not believe of him.

6 I try for a good price.