题目内容：

every means has been tried.Yet this machine ___
a.won't work b.doesn't work
为何选A不选B?

优质解答

这是一种惯用法,使劲办法想把某个东西操作起来,它就是不动不起作用时,我们就要用won't /wouldn't(过去时）加动词原形.
例：我使劲推门,门就是不开.
I pushed the door hard,but it wounldn't open.