And "A" Knows that they're going to figure out that fire was arson.A知道他们会查出是有人纵火

figure out想出；解决

The boy can't figure out the algebra problems.

这个男孩做不出这道代数题。

It didn't take the children long to figure out the correct answer.

孩子们没有花很多时间就算出了正确的答案。

your boyfriend just cooked for you.你男朋友刚为你做好的早餐

cook for为某人煮饭

Mom is out.Can you come over and cook for me?

妈妈出去了，你能过来给我做饭吗?

They need some one to cook for them.

他们需要有人给他们做饭。

It goes against my better judgment.我觉得你最好不要再喝了

go against违反； 对 ... 不利

Don't do anything that should go against his will.

不要做违背他心意的事。

I wouldn't advise you to go against the director.

我反对你和经理对着干。