There was no sign _______ they had died from diseases such as bird flu - the main worry in such cases. Among the theories was _______ a truck had collided（碰撞）with the crowd.  

There is no doubt _____ short sight is a serious problem among the youth of our country.

The news has spread all over the country ____ the spaceship succeeded in returning to the earth.

Faced with a bill for $ 10,000, ________________ .

_______ she was invited to the ball made her very happy.

There is a general but false assumption _____ intelligent people do better in life.

When asked _____ they need most, the kids said they wanted to feel important and loved.

_____ surprised me most was to see so many people waiting for my arrival.

Anyone who applies for the position must meet the requirement ______ he or she should have a good command of English.

In 1942, Columbus and his crew arrived ________ was so-called the New World by the westerners.