1. (2020·西藏模拟) 阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。

There are several reasons why school uniforms are good idea. First of all, uniforms help the school look smart. The students feel that they belong to a particular group. When every pupil in the school wears the uniform, nobody (have) to worry about fashion(时尚). Everybody wears  same style of clothes. Uniforms can be useful in unexpected ways. A school in Ireland has introduced an interesting new uniform. On the edge of the jacket, there is a piece of cloth  gives off light in the dark. When the children are walking or (cycle) to school on dark mornings, car drivers can (easy) see them.

But can uniforms help improve school standards? The answer  this question is not clear  One study in America found that students' grades (improve) a little after the school introduced uniforms. But some students didn't want (wear) the uniform. Other American studies showed no (connect) between uniforms and school performance.

School uniforms are (tradition) in Britain  but some schools are starting to get rid of them. Some very good schools don't have a uniform policy. However, uniforms are still popular. Pupils at about 90 percent of British secondary schools wear uniforms.