A team, _____ two doctors and three policemen, ____ sent to search for the missing explorers.

Great attention must be paid ________ education，especially in the countryside.

—Come on, please give me some ideas about the project.—Sorry. With so much work           my mind, I almost break down.

I like getting up very early in summer. The morning air is so good____.

．(2013·江西九江高三二模)________ around the university, we then were taken to a building, where many scientists worked.