I went through about four years of being         to video games but fortunately I managed to get rid of it.

The global warming is more and more serious，for which human beings ________.

 With the development of Chinese economy, many unexpected problems have ________; for example, the prices of our daily goods and housing are ________ sharply.

With more and more farmers moving to cities, an inadequate labor force is ________ becoming a major factor affecting the country's grain output.

 What a pity. The car ran out of sight before I could ______ its number.