16.=D.
17.=1.
18.=Please show the last option!
Grazing contentedly in the pasture is the dream of every cow.
Grazing contentedly in the pasture is to chew grass happily in the grass meadow.
Seems to me the answer is.
"Every mouthful of food was an acute positive pleasure, now that it was truly their own food, produces by themselves and for themselves, not doled out to them by a grudging master".
maybe...it seems it to me though.
