Mary wrote an article on _______ the team had failed to win the game.
— The current international financial crisis is affecting most countries in the world.— Would it be at least several years ______ everything returns to normal?
Fans from miles around crowded into the stadium for the concert of Jay Chou on September 4th, 2010, ______ are popular with teenagers.
Bob is determined to get a seat for the concert ______ it means standing in line all night for the ticket.
Bamboo, which is a common plant in the south, is used ______ in buildings, food, furniture and so on. It is used to make clothes as well.
Before Chinese Chang’e-2, the US sent up a space probe (探测器) to hit the moon to see ______.