Please capitalize where necessary: it may improve the efficiency of heat insulation.
A: It may improve the efficiency of heat insulation.

Q: it is part of human nature and the "more precise and clear the reason is, the better the fantasy world it creates".

A: It is part of human nature and the "more precise and clear the reason is, the better the fantasy world it creates".

Q: mpr.dll device can't work/no sound: actually, in most cases device problem is because of .sys files.
A: mpr.dll device can't work/No sound: Actually, in most cases device problem is because of .sys files.

Problem: it was a time of rapid mathematical development and gregory found that collins , with his up-to-date knowledge of developments, was most helpful to him.
Can you repeat this sentence, but capitalize it?
Answer: It was a time of rapid mathematical development and Gregory found that Collins , with his up-to-date knowledge of developments, was most helpful to him.

Text: check rates and availability for shanghai equatorial hotel. then proceed to booking.

Correct capitalization: Check rates and availability for Shanghai Equatorial Hotel. Then proceed to booking.

Text: each eu country has strict testing requirements for medicines before they can be placed on the market.

Correct capitalization:
Each EU country has strict testing requirements for medicines before they can be placed on the market.