Please capitalize where necessary: remember that murales have existed since prehistoric times, when the men drew on cave walls, to warn of dangers or to tell stories of everyday life.
A: Remember that murales have existed since prehistoric times, when the men drew on cave walls, to warn of dangers or to tell stories of everyday life.

Please capitalize where necessary: the volvo fe is available both as a tractor and as a rigid for gross vehicle weights of 18 to 26 tonnes and the chassis range is broad.
A: The Volvo FE is available both as a tractor and as a rigid for gross vehicle weights of 18 to 26 tonnes and the chassis range is broad.

Please capitalize where necessary: all engcon's sk-grabs can be fitted with removable teeth
A: All engcon's SK-grabs can be fitted with removable teeth

Please capitalize where necessary: on the other hand, the alert student could spot a succession of jokes all made with an entirely straight face and no change of tone.
A:
On the other hand, the alert student could spot a succession of jokes all made with an entirely straight face and no change of tone.