it’s gone为什么不用it have gone用it has gone

it’s gone为什么不用it have gone用it has gone 还有it's gone,为什么这么表达? it's well enough 为什么不用good it's raining again.中为什么不用it was. What's gone,It's never comingback. Alice 's second-hand computer ____wrong although she used it only once.A.has gone Bwent为什么不用B,表示陈述一个一般事实呢 its gone,whoever,whatever是什么意思 What are you looking for,Michelle?My cousin's MP3 player.It _right in here,and now it's gone.为什么空缺处填was,而不用完成时 I find it interesting to work with him.为什么用it 而不用it's? It's not the way I planned it. 中为什么不用It was ? meaning:what's gone is gone.It's no use talking about it any more. It's good exercise.为什么good前不用加a? It's twenty minutes' walk 为什么不用twenty-minute? it's well worth seeing.为什么不用to see 为什么这个句子不用加冠词?.It's your umbrella. It's () hot.为什么要用really 而不用real Let's go see it?为什么不用“Let's go to see it? it's a dream that's gone too far