—Today is the _____ day in my life, because I won the first prize in the competition. —Congratulation!

According to the latest reports on TV and in the newspaper, food safety is becoming a ____________ serious worldwide problem.

Now the air in our city is _______ than it used to be．Something must be done to stop it．

— The number of pandas is getting________ because their living areas are becoming polluted. — So we must do something to protect them.

—How did you lose the soccer match?—We had _______ players. They had eleven while we had only nine!