相关71Thestudentsaref的文学知识

问题详情：71.Thestudentsaref_________(禁止)tousephonesinclass.  72.Thefootballplayerwaswounded.Theteamleaderhadtoallowan_______(可替换 的)playertojoininthematch.    73.Isit________(方便)foryoutop...