根据下表判断句子正误，正确的在括号里打“√”，错误的打“×”。
( ) 1. — What's Zhou Jielun's hobby? — He likes swimming.
( ) 2. — What's Yang Liping's hobby? — She likes dancing.
( ) 3. — What's Lang Lang's hobby? — He likes playing the piano.
( ) 4. — What's Guo Jingjing's hobby? — She likes playing chess.
