Canada, _____ second to Russia in size, is _____ home of all kinds of animals and plants, making it famous for its natural scenery.
All the gifts must be mailed immediately________in time for Christmas.
If city noises________from increasing, people________shout to be heard even at the dinner table 20 years from now.
—What happened to the priceless works of art?—________.
—How long________at this job?—Since 1990.
It was quite right for Yuan Longping to think that________was to have more rice and produce it more quickly.