Mr. Rod prefers a restaurant in a small town to_______ in so large a city as Beijing.

Please pour the watermelon __________ the blender.

I have been living in the United States for twenty years,but seldom _______ so lonely as now.

__arriving in Tibet , the soldiers atonce joined them ____their work

Washington DC is _____ beautiful city. Itis _____ capital of _____ USA.