our questions were about exercise,use of the Interner and watching TV.为什么about后面的exercise,use不用加ing 为什么?我记得about后面的动词要加ing的啊
问题描述：
our questions were about exercise,use of the Interner and watching TV.
为什么about后面的exercise,use不用加ing 为什么?我记得about后面的动词要加ing的啊
答