We can never expect      bluer sky unless we create      less polluted world.

Hi, Tom, your pray doesn’t seem to make ______ difference. The team I’m in _____ favor of is not taking _____ lead.

The China Education Expo 2010 provides visiting students with ________ wealth of information on ________ options open to them for overseas study．

Daisy wants to be ____ engineer while Jack wants to be ___ teacher.

The story shows that _______ knowledge of _______ first aid can make ______ real difference.

Ding Junhui  ,___________most famous snooker player ,is ____________quiet young man.

The World Wide Web is ____ computer network that allows ____ computer users to access information for millions of websites via the Internet.

Fruits are sold by ______ kilogram in the market, and it will be cheaper to purchase them in ______ quantity.

In China, _____ car is increasingly becoming ________ popular means of transportation．

I want an assistant with _______ little knowledge of French and _______experience of office routine.