He usually plays at the park ___On_______ Sunday.
他周日经常在公园玩.
A.in B.at C.on
（在星期几前一般用介词on）
Ann / TV / on / cartoons / watches +翻译
Ann watches cartoons on TV.
Ann看电视上的动画片.
Who / in / a / factory / works / car
Who works in a car factory?
谁在汽车工厂工作?