Benisa______boy是twelve-year-oid,为什么不是twelve-years-oid,详细解释
还有Theoidmandoesnot____him.是listento不是hearof,详细解释
还有:whatjobdoesPeterliketo___是do不是be,详细解释
这两题老师将的我云里雾里所以要解释好点O