It is important( ) A for us to do eye exercise B for us to do eye exercise C of us to do exercise DB for us to do eye exercises
问题描述:
It is important( ) A for us to do eye exercise B for us to do eye exercise C of us to do exercise D
B for us to do eye exercises
答
A
答
A for us to do eye exercises
A和B怎么一样的?exercise要加s
答
A与B相同,应该有一个是 for us to do eye exercises,正确答案就是 for us to do eye exercises