Text: what is file extension bcf?

Correct capitalization: What is File Extension BCF?

Text: this incident was to have serious consequences but after it fourier returned to auxerre and continued to work on the revolutionary committee and continued to teach at the college.

Correct capitalization: This incident was to have serious consequences but after it Fourier returned to Auxerre and continued to work on the revolutionary committee and continued to teach at the College.

Text: we welcome trade enquires from importers / exporters, wholesalers and bulk quantity orders from all over the world. we offer customers a wide range of product services.

Correct capitalization: We welcome trade enquires from importers / exporters, wholesalers and bulk quantity orders from all over the world. We offer customers a wide range of product services.

Text: i really love the color combos made from colors that are right next to each other. green-blue-purple, purple-pink-red or as i wore yesterday, red-orange-yellow.

Correct capitalization:
I really love the color combos made from colors that are right next to each other. Green-blue-purple, purple-pink-red or as I wore yesterday, red-orange-yellow.