What is it that has four legs And one back, Yet can't walk?

My second is performed by my first ,And, it is thought,A thief by the marks of my whole,Might be caught.

vegetable（蔬菜）

When Columbus discovered America,where did he stand?

死大的（打一英文单词）

勾后母（打一英语短语）

福特（打一英语单词）

What never asks questions but always gets answers?

否豆子（打一英文单词）

Eight were standing, Two were cracking, Two were looking.