A waste of time and effort

it was a waste of time and A waste of time and effort a waste of time “Bai Feili”means（ ） A.a waste of time B.waste of time C.a waste of a time D.waste of a time 答题详细点. a waste of time 怎么造句? It is only a waste of time a waste of time 咋个造句 用“a waste of time”造句. 怎么用a waste of time造句 It's a waste of time exactly! It is likely to end up being a waste of time and money it is a waste of time to play computer games day and night 适当形式填空Stop doing that!It is a waste of time and ____________________(affort). 翻译：It's a waste of time and I wish I had never seen it Imagining things without putting in effort is but daydreaming and a mere waste of time. It's _____to play computer games.(A:waste time B:a wsate of time C:waste of time D:a waste time)选哪个?为什么? waste修饰名词要加of吗 例如a waste of time 浪费时间和金钱 英语为什么不是 waste money and time 而是waste of money and time?waste of 是固定搭配吗