To improve the quality of our products, we ask ____ has used them for suggestions.

Television, marked by rapid change and refinement, is entering a new period, ____ to reshape our life and our world. 

Faced with a bill for $ 10,000, ________________ .

         ，I have to put it away and focus my attention on study this week.

 The British are not so familiar with different cultures and other ways of doing things, ________ is often the case in other countries.