Definition: to know or recognize something from what you hear, see, etc. Level: B2
从她的表情，我能看出她很不高兴。
I ___can ___tell that she is upset from her expression.
对他这个人，你永远搞不清他是不是在开玩笑。
With him, you ___can never ___tell if he's joking.
即使是在电话里，我也能听出母亲什么时候在担心。
Even over the phone, I ___can ___tell when my mother is worried.
