1．recommend the book to all my students
向我所有的学生推荐这本书
2．a proposal to build more office accommodation
增建办公楼的建议
3．questions concerning the future of the company
有关公司前途的问题
4．give your brother my regards
代我向你哥哥问好
5．look forward to hearing from you
盼望收到你的来信
