Can I ask you something?
我可以问你一个问题吗?
Good question.
问得好。
I'd have to think about it.
我得想一想。
That's an interesting question.
这是个有趣的问题。
Well, let's see.
嗯, 让我想想。
I'm not sure.
我不确定。
I'll have to check.
我得查查看。
I have no idea.
我一点儿也不知道。
You got me there!
你问倒我了。
How can l put this?
这该怎么说呢?