Do you know the young man well?—Sure, we __________ friends since we met in Nanjing three years ago.

What a delicious joke! This sentence means _____.

2012 is the Year of the Dragon．The dragon isfifth sign in the Chinese Zodiac cycle (十二生肖).

I’d like to help homeless people, so I could ________ food at the food bank.

The war against Iraq and the suffering _____caused have become a big concern all over the world.