Please capitalize where necessary: many took up this challenge and more than 3,000 photos were submitted from all 27 eu countries, of which the best were awarded tablets.
A: Many took up this challenge and more than 3,000 photos were submitted from all 27 EU countries, of which the best were awarded tablets.
Q: staying abroad for up to 3 months

A: Staying abroad for up to 3 months
Q: 8.everybody is doing it. so, don’t be left behind. “if you don’t exist online, it seems that you don’t exist at all”.
A: 8.Everybody is doing it. So, don’t be left behind. “If you don’t exist online, it seems that you don’t exist at all”.
Problem: to begin your free file analysis, simply drag-and-drop your hwd file inside the dotted lines below, or click "browse my computer" and select your file.
Can you repeat this sentence, but capitalize it?
Answer: To begin your free file analysis, simply drag-and-drop your HWD file inside the dotted lines below, or click "Browse My Computer" and select your file.
Text: note it. christ is not coming to a material building, but to his church, then to be glorified with him!

Correct capitalization: Note it. Christ is not coming to a material building, but to His Church, then to be GLORIFIED with Him!
Q: 34 by the way that he came, by the same shall he return, and shall not come into this city, saith the lord.
A:
34 By the way that he came, by the same shall he return, and shall not come into this city, saith the LORD.