以a waste of time造句并翻译

用“a waste of time”造句. 怎么用a waste of time造句 a waste of time 怎么造句? a waste of time 咋个造句 解释keep to 和a waste of time 和be short of 并分别造句 a waste of time It's a waste of time exactly! A waste of time and effort it was a waste of time and It is only a waste of time It's a waste of time改为感叹句并说明理由 “Bai Feili”means（ ） A.a waste of time B.waste of time C.a wa