For ages, Bill Gates has been supporting educational programmes that ______from kindergartens to universities.

The prisoner seemed to have been a bit.

(2014·乌鲁木齐高三年级第二次诊断性测验)I might fail，but________I insist on doing itI never lose heart

The world’s population is growing and there is land and water for growing rice.

The doctor thought ____ would be good for you to havea holiday