Hello teachers. If I'm not mistaken, one of the uses of “can’t” is to express a physical impossibility because of lack of ability on the part of a person. If that is so, will all these example work for the above definition? 1. She can't speak German. 2. He can't play the piano. 3. They can't ski at all. 4. I can't understand that sentence. 5. I can't park in this small place. Thanks in advance.