this is a bed and that is a bed,--------填空 [ it not eraser an is ]连词成句
完成对话.每次一空。1.A；------- is this?B;------is a baseball.A; ------ ------your-----?B;No.I-------- -------his baseball。2.A；----- ------。I ------ ------- his------.A; Jim,----- ------ ------- -------?C; yes ----- -----,------.A; that's ----- ------.