question: hpz3rw72.dll device can't work/no sound: actually, in most cases device problem is because of .sys files.
Capitalize this past sentence correctly.
A: hpz3rw72.dll device can't work/No sound: Actually, in most cases device problem is because of .sys files.

question: this contains on page 243 the following passage:
Capitalize this past sentence correctly.
A: This contains on page 243 the following passage:

question: for people to live longer, healthier and happier lives in all parts of the city
Capitalize this past sentence correctly.
A: For people to live longer, healthier and happier lives in all parts of the city