Please capitalize where necessary: as well as combinations of these treatments.
A: As well as combinations of these treatments.

Q: worldwide most visited independent site for booking language courses, russian lessons & russian language classes & russian language study abroad programs at russian schools in russia.

A: Worldwide most visited independent site for booking language courses, Russian lessons & Russian language classes & Russian language study abroad programs at Russian schools in Russia.

Q: this sophisticated acoustic principle makes it easier to integrate the loudspeaker in the acoustics of the living room. in most living rooms the ceiling and the floor are completely even surfaces that give many reflections of the sound.
A: This sophisticated acoustic principle makes it easier to integrate the loudspeaker in the acoustics of the living room. In most living rooms the ceiling and the floor are completely even surfaces that give many reflections of the sound.

Problem: electromobility will make diesel and gasoline vehicles even more efficient
Can you repeat this sentence, but capitalize it?
Answer: Electromobility will make diesel and gasoline vehicles even more efficient

Text: how do you use your energy?

Correct capitalization: How do you use your energy?

Q: get people to take a photo in the store and post it- you'll need to ensure they tag you in it, or mention your store.

A:
Get People to Take a Photo in the Store and Post it- You'll need to ensure they tag you in it, or mention your store.