bob has chicken for dinner i'm piaying the piano he does his homework at home改否定句the old man can piay tennis racket改否定句

问题描述:

bob has chicken for dinner i'm piaying the piano he does his homework at home改否定句
the old man can piay tennis racket改否定句

Bob hasn't chichen for dinner.I'm not playing the piano.He doesn't do his homework at home.