question: we must create a green europe.
Capitalize this past sentence correctly.
A: We must create a green Europe.

question: there is a lot of information on the market, and every system provider naturally presents his products uncritically and to advantage for the prospective purchaser.
Capitalize this past sentence correctly.
A: There is a lot of information on the market, and every system provider naturally presents his products uncritically and to advantage for the prospective purchaser.

question: hold a stick of incense near doors and windows to determine if you have any air leaks.
Capitalize this past sentence correctly.
A: Hold a stick of incense near doors and windows to determine if you have any air leaks.