The use we make of our time is not proper.为什么是定语从句

The use we make of our time is not proper.为什么是定语从句 make good use of time + 限制性定语从句 .. I think the task_____on time if we make good use of our time We should make full use of our time to___useful we must make good use of our time 定语从句的问题1.My brother is always making good use of the time wh to realize our dreams,we must make good use of our time 求翻译 We should make use of our time p___ and don't waste time IT IS TIME THAT WE LEFT 书上说这是定语从句 为什么代词是THAT而不是WHEN 将 We should make full use of our spare time to study.变为被动句 We should make full use of time to improve our spoken Englis As students,we should make best use of our time(翻译）