The gap between rural and urban education in China is widening, and education is the key to _____ rural problems.

When one makes new friends, don’t forget ______ old ones.

It remains ________ whether the students will benefit from the monthly exams.

___ by thick bamboo and high forest, the ancient city hadn’t been discovered until the 1990s.

After he became conscious, he remembered _________ and _________ on the head with a rod.

____ the problem was ______ he could deal with, he called the police for help.

 his business, he had little time to have fun with his little daughter.

Some policemen should be sent to _______ them _______ the animals.

Su Lijie, 39-year-old female graduate of Peking University’s graduate school ended up ____as a house painter back in her hometown.

This famous article written by Henry is well worth        , but I think it is not worthy     at all.