The wealth of a country should be measured ________ the health and happiness of its people as well as the material goods it can produce.

In the future, more ______ should be placed on the education of the young.

下面对资本主义工商业的社会主义改造经历的步骤表述正确的是_______。

Attendance at football matches have _____ since the coming of television.

Be careful, _______ you'll fall down.