It was already past midnight and only three young men _____ in the tea house.
The sun ___ red.It __ in the east.
To answer correctly is more important than ___.
Great changes ___ in our city since 1977.
The fact has worried many scientists ______ the earth is getting warmer and warmer these years.
—How about your journey to Mount Emei? —Everything was wonderful except that our car _________ twice on the way.