Please capitalize where necessary: which bets should i play for?
A: Which bets should I play for?

Please capitalize where necessary: the abrasive grain must be fixed horizontally while the specimen is passing over it to obtain sufficient cutting force, (see below).
A: The abrasive grain must be fixed horizontally while the specimen is passing over it to obtain sufficient cutting force, (see below).

Please capitalize where necessary: the asymmetrical axle spacing enables a total towing weight of up to 45 tonnes.
A: The asymmetrical axle spacing enables a total towing weight of up to 45 tonnes.

Please capitalize where necessary: he can reach outward a little further; therefore he can exert a calming influence upon his immediate environment.
A:
He can reach outward a little further; therefore he can exert a calming influence upon his immediate environment.