问题描述: 4.4.Painting in _____ is one of their spare-time activities.后面填oil 还是oils 1个回答 分类:综合 2014-12-08 问题解答: 我来补答 oils用油彩画画.用油彩画画是他们的课余活动之一.painting in oilsoil painting注意单复数 展开全文阅读