Question

Every minute must be made full use of___our lessons,for the

Answer 1

应该选B

to be over our lessons中的to do是表目的,指花时间（every minute）做什么

举例

We must make full use of every minute to learn.

改成被动便是

Every minute must be made full use of to learn.

这里的be over our lessons中的over 是介词,表示一段时间,

如：Text book should be used over our lessons.

再比如：Laugh is all over our meal.我们饭桌上（吃饭时）充满欢声笑语.