Nearly 56 percent of Chinese believe that traffic order got even worse after tightened traffic regulations ______at the beginning of 2013

Is ____three hours ____ the boy ___family is poor to come to school on foot?

These days lots of people are working_________ to get_________ for their living.

How many birds can you see in the trees—I can see _____ birds in them.

Wang Ping is one of the best students who _____from Beijing University. She studied politics, which _____the study of the ways in which a country is governed. [ ]