sheep可數還是不可數用is還是are

The path was no better than a sheep track.

那條小路簡直就像是羊腸小道。

Stefano used a motorcycle to herd the sheep.

斯蒂芬諾騎一輛摩托車驅趕羊羣。

Competitors have six minutes to shear four sheep.

參賽者們有6分鐘的時間來給4只羊剪毛。