We are at your service. Don’t ________ to turn to us if you have any further problems.

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

The Korean government plans to import Chinese cabbage from China, as the recent rainstorm has______ the price.

In the Olympic Games, only athletes who have reached the agreed standard for their ____ will be allowed as competitors.

I don’t know the meaning of the poem, because I have little ______with modern society.