Please capitalize where necessary: we can also work on:
A: We can also work on:

Q: through trade agreements that reduce tariffs and other barriers to trade, it is possible to open up new markets for european exporters, which benefits both european businesses and citizens.

A: Through trade agreements that reduce tariffs and other barriers to trade, it is possible to open up new markets for European exporters, which benefits both European businesses and citizens.

Q: mower husqvarna 335fr - description, specifications, prices on lawn mowers
A: Mower Husqvarna 335FR - description, specifications, prices on lawn mowers

Problem: but how should you choose a language to study? i think the first language you study should be one that will be most [...]
Can you repeat this sentence, but capitalize it?
Answer: But how should you choose a language to study? I think the first language you study should be one that will be most [...]

Text: the pitch is three-quarters of the length of a standard polo pitch, due to the slower speed of the elephants.

Correct capitalization: The pitch is three-quarters of the length of a standard polo pitch, due to the slower speed of the elephants.

Q: an (italian?) guy called "expander", has published this very informative computer drawing of the plan shapes of some of the more recent formula boards.
A:
An (Italian?) guy called "expander", has published this very informative computer drawing of the plan shapes of some of the more recent formula boards.