Painting in _____ is one of their spare-time activities.a.oil b.a_英语解答

Painting in _____ is one of their spare-time activities.
a.oil b.an oil c.oils d.the oil
请高手给我个确切的答案,再讲一下其中的语法知识,我将感激不尽!

人气：272 ℃　时间：2020-09-06 13:33:25

解答

高手来,in oil.当名词只表性质或状态时有原型,不加冠词.
in hospital,住院.只是表住院这个状态.