The air pollution of the city ____ by 20 percent thanks to the strict measures taken by the government.

s wrong with your coat — Just now when I wanted to get off the bus , the man nextto me on it .

Who is the student on the playground—Andy. _________ often takes a walk with _________.

Look at the black cloudsIt ______ soon— SureIf only we ______ out

He had promised me to come to the party, and _____