A:Guess what this is? 你猜这是什么?
B:I give up. What is it? 我猜不来, 到底是什么呢? Take a guess. 你猜吧.
It's just a hunch. 这只是一种直觉. This is purely hypothetical. 这纯粹是个推论.
It's just guesswork. 这只是猜测. Guess who? 你猜我是谁?
No kidding? 是吗?
What a surprise! 太令人惊讶! How about that! 没想到竟是如此了得!
Fancy that! 意想不到!
