不择手段-----by hook or by crook

例句：
A: How can I accomplish the errand?
我如何完成该任务呢？
B: As you know, the end justifies the means, so you should carry it out by hook or by crook.
如你所知，为达目的不择手段，因此你应不择手段完成它。

同义词：
by fair means or foul
go to all lengths
stop at nothing