Let's find a place     we can wait out the snowstorm．

Barack Obama delivered a speech to 500 local youths during his visit to China，many of     were from Fudan University and Tongji University．

I shall never forget the days ________ I spent in Beijing University, ________ has a great effect on my life.

The man ______ talked to you just now is an engineer.

All ______ we need is to be supplied with food and clothing.

The police are looking for the witnesses,__________ words will make a difference to the victim.

Young people who have got jobs may realize university lessons can’t be the only preparation for all the situations _______ appear in the working world.

As is recorded in history, silkworms (蚕) were first raised by a woman in _____ is today Hebei Province.

Do you still remember the year _________ China became a member of WTO?

We went to the Lincoln Memorial yesterday, ___, not surprisingly, was crowded with visitors from all over the world.