century ago, parts of the Thames were “biologically dead” because of the pollution.

What an unforgettable experience!I’ll write it down________it is still fresh in my memory[ ]

Eight countries _____the Group of Eight are trying to dealing with the global financial crisis (全球金融危机).

In the eyes of the newlyelected prime minister, there is never too small a thing as far as the farmers __________.

Would you like tea or coffee, Ayse—_________ is OK. I really don’t mind．