Which do you think is ________, health or wealth？

If a boy or a girl has grown up in a home with sharing tasks and decisions，he or she will probably______.

29．__________ when you are on the bus or bike．

Either he or I ______to the airport.

GPS卫星定位系统由空间星座部分、地面监控部分和（）三部分组成。

GPS系统由三大部分组成：空间部分——GPS卫星星座；地面控制部分——地面监控系统；用户设备部分——GPS信号接收机。

Duty is an act or a course of action that people __________you to take by social customs, law or religion.

Duty is an act or a course of action that people ______you to take by social customs, law or religion.

Project ______is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

It will be a relief over the death of a friend or a relative if the friend or relative dies from ______.

Hurry up, or you ______ catch the train.

全球卫星定位系统（GPS）采用____定位技术，应用于汽车定位导航和营运车辆动态管理。