1．He is so stubborn that he never compromises 妥协) with anybody.(
2．Under no circumstances should we betray 背叛) our motherland.(
3．The books in the library are classified by subject.
4．What newspaper do you subscribe 订阅) to?(
5．The possession of a happiest man may not be the best, but he knows how to enjoy what he has.
6．Steve gave me some useful tips on how to take good pictures.
7．The manager appointed 指定) him to receive the business man this morning.(
