Shanghai is trying to control ________ number of cars on the road to ensure clean air for ________ 2010 World Expo.
The doctor said it would take six weeks to recover and I ________ be fine by then.
Knowledge is there for _______ will seek it.
―Why are we supposed to buy that flat? ―Because it’s clean and well-located, but _______ of all, it’s affordable.
It came as_______ surprise that Poland’s President and scores of its top officials were killed in _______ air crash in Russia.
―Thanks for the ride home! ―_______