Our government's plan to fight against air pollution will focus on ________ information and handling PM2.5.
Nothing is so easy as ________ parents to raise their expectations of their children too high.
History is the best teacher. It _______records the development path of each country and foretells the future to us.
---Have you got the final result?---Yes, very disappointing. We________ have won the game.
Jim told us all that _______ he said at the meeting was right.
As its name ________, the Volunteer Farm relies on volunteers to weed, plant and harvest.