用所给单词的适当形式填空.

1. Where _____ (be) the pay phone?

2. There are two _____ (library) in the city.

3. _____ (be) there two books and a ruler in the bag?

4. Our school is on _____ (five) Avenue.

5. There _____ (be not) a bridge over the river.

建立城乡统一、重在农村的义务教育经费保障机制，加大（）投入向中西部和民族边远贫困地区的倾斜力度。

A.基础设施

B.教育资源

C.公共教育

D.公益基金