udy of natural history is not something to be left to biologists. In fact, their capacity __________ the time they can spend away from their offices is very limited.

You can call me _______18851556155 or e-mail me ______ laoli0708@163.com.

Jane, when did you come here——In 2011, I _______________ here for 2 years.

_______ your hometown like —It’s a good place _______.

ience of computer, _______rapid progress hasbeen made in recent years, is the most important of all science.