1.precious和valuable的区别?时间宝贵用? 2.因饥饿而死和因伤致死分别用die of和die for哪个?这两个短语如何区分? 3.He represented me_________his father. A.to be B.being C.be 4.我想知道都做形容词时,live和lively的区别. 5.Well__know him and well__know me. A.I did;he did B.did I;did he C.did I;he did D.I did;did I 谢谢大家!