I think every student should go to school , but some of them are always late.
- A.by the time
- B.on time
- C.for a time
- D.at times
答案
正确答案:B
知识点:介词短语

by the time“到……的时候”;on time“准时”;for a time“一段时间”;at times“偶尔”。根据语境,此题句意为:我认为每位学生都应该准时到校,但是有一些学生总是迟到。故正确答案为B。

略
