his bookishness, curiously little is known about the worldview of Gordon Brown, the first British Prime Minister said to be a real intellectual in decades.

People in Tianjin are proud of ______ they have achieved in the past few years.

It has been 60 years ______ the two countries established diplomatic ties.

How much one enjoys himself travelling depends largely on_________he goes with，whether his friends or relatives．

Mark needs to learn Chinese ______ his company is opening a branch in Beijing.