Please capitalize where necessary: a few studies examined palaeoclimate reconstructions from the past millennium or the period around 12,000 years ago when the planet came out of a global ice age (last glacial maximum).
A: A few studies examined palaeoclimate reconstructions from the past millennium or the period around 12,000 years ago when the planet came out of a global ice age (Last Glacial Maximum).

Please capitalize where necessary: the afternoon is spend reading, dozing off a bit and talking.
A: The afternoon is spend reading, dozing off a bit and talking.

Please capitalize where necessary: how far in advance do i need to register for my language course?
A: How far in advance do I need to register for my language course?

Please capitalize where necessary: without counting wages the costs are very limited.
A:
Without counting wages the costs are very limited.