Peter likes children and is very good （to） them.
彼得喜欢孩子,对他们很好.
be good to sb,对某人好.要填介词to,表示“对（某人）”.I___paint��but I___to join the art club.��ô��I (can't) paint��but I (want) to join the art club.�Ҳ��ử��������������������ֲ���