题目

  Xinxin Middle School     Tom Smith     English Teacher  Add：No.5 Nanjing Street Jilin City  1320001  China Tel(0432)2458998  E—mail：tomsmith@163.com    Jilin Jiajia Company     Li Weihua  Computer Engineer  Add：35 Jilin Streeet Jilin City  132021 China Tel(0432)2458988  E—mail：1wh 988@263.com     Jilin Children's Hospital     Zhao Weibing     Doctor  Add：135 Jilin Street Jilin City 132011 China Tel(0432)6983245  E-mail：zhaoweibing@sohu.com    Jilin Children's Hospital．     Wu Dong  Dentist ( treating and remake all kinds of  teeth) A—Don't you know that a proper amount of exercise a day will ________ to a person's health?—No wonder  so many senior citizens do exercise in the square.A．construct B．conclude C．distribute D．contribute