Please capitalize where necessary: post episode of depression can often be attributed to this type of mood behavior in people who has used anti-depression medications in the past.
A: Post episode of depression can often be attributed to this type of mood behavior in people who has used anti-depression medications in the past.

Please capitalize where necessary: the following instructions are for windows:
A: The following instructions are for Windows:

Please capitalize where necessary: naimark also contributed to banach spaces.
A: Naimark also contributed to Banach spaces.

Please capitalize where necessary: the use of rovings instead of long-fibre granulate yields a significant cost benefit.
A:
The use of rovings instead of long-fibre granulate yields a significant cost benefit.