students are wearing their school uniforms（uniform要加s吗?）at s

the students are a______ wearing school uniforms they want t we wear school uniform at school.uniform为什么不加s? Students in the picture are showing their new school uniform wearing your uniform at school 改错 The policemen are in uniform为什么uniform不加s Students wear school uniforms at school m---- he always ____(穿)uniforms 填什么?为什么填这个?always 、uniform为什么加S? The students should wear their uniforms at school怎么改同义句 请问school uniform可数吗?、 可以加a,an或s吗 Look!They must be students and always（）their school uniforms 1、We should allow students to design their school uniforms. 一些学生认为校服的颜色单调、质量差 Some students think school uniforms have s