Instead of ____ for the teacher to explain, they tried to find the pattern and the rules for themselves.( )
— Which city has _________population, Beijing, Guiyang or Nanchang?
— Beijing, of course.
You can _____ some bottles of wine, or some chocolates, or a bunch of flowers.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
— Which city has _________population, Beijing, Guiyang or Nanchang?
— Beijing, of course.
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