单项选择题
When I was a boy, children always objected to wearing school uniform but teachers were (1) it because they said all of us looked (2) . Otherwise, they said, children would compete with (3) and the poorer children would be unhappy because people would see how poor they were. In recent years, however, many schools have (4) the idea of making children wear uniform.
3()
A.each other
B.another
C.themselves
D.others