Nature reserves are very important for preserving many animals and plants, which would _______ run the risk of becoming extinct

The book Been There, Done That written by a Chinese American graduate is _____ a real story.

By the end of last week, Maggie________ in the west of China for two months helping the homeless children.

To handle the financial crisis, the new government has to work more ______ with other nations, especially the less-affected ones

I surf the Internet for twenty more minutes,Mum—Oh, dear, if you________.