Please capitalize where necessary: beautiful spring day when hbu arranged pimpeldag last time.
A: Beautiful spring day when HBU arranged pimpeldag last time.

Please capitalize where necessary: 14 these things i write to you, hoping to come to you shortly;
A: 14 These things I write to you, hoping to come to you shortly;

Please capitalize where necessary: did someone email you a vbf file and you're not sure how to open it? maybe you have found a vbf file on your computer and wondering what it's for? windows might tell you that you can't open it, or in the worst case, you might encounter a vbf file related error message.
A: Did someone email you a VBF file and you're not sure how to open it? Maybe you have found a VBF file on your computer and wondering what it's for? Windows might tell you that you can't open it, or in the worst case, you might encounter a VBF file related error message.

Please capitalize where necessary: for in-flight catering, liegegebühren, diesel and other consumables will set up a board cash.
A:
For in-flight catering, Liegegebühren, Diesel and other consumables will set up a board cash.