Work hard, you’ll pass the exam.

．It was the four years from 2004-2007, ____ I spent studying for a master’s degree, ____ I will never forget．

rry, but I don’t quite follow you.Did you say you wanted to return on September 20—Sorry, I ______ myself clear. We want toreturn on October 20.

填入下面文段空白处的词语，最恰当的一组是就承诺而言，①千金一诺最为沉重，②空口无凭又最为虚泛，观其行径还要等漫漫时间的印证，③，“信”在外化体现方面，④产生了一种加固信任的仪式。仪式也并不复杂，中国的印幸，⑤是一种仪式化的凭信。对于一国来讲，国之玉玺，郑重一落，就印盖出了国家信誉；⑥对于个人来讲，名章为凭，红印一盖，就代表着本人的信誉。 ①②③④⑤⑥

．______Hard you may try, you can’t possibly persuade Tom to give up smoking, for he is so addicted to it