1.His criminal record disqualified him from being admitted to the university.2.The system of job responsibility can be adopted when the conditions are ripe.3.The money absolutely must not be paid before the receipt has been signed.4.He offered this car for a million yuan.5.Strong economic and environmental factors recommended rectifying the city's water shortageand pollution now, before it is too late.6.Sport and physical education are activities undertaken in mankind's ceaseless pursuit of the Olympic ideal. Sport not only builds one's physique, but also teaches communication, cooperation, respect for others, and acceptance of failure. As such, it is an important medium for strengthening the ties among different civilizations and values.