It’s difficult for college students to have a train seat during holidays, so they are advised to make seat ________ well in advance.                     

 Nowadays, there is a ____ that receiving education is a waste of time. 

.How many foreign friends does he have? ___.

  —Nowadays the doctors are trying their best to reduce the people’s fear__________ they would be affected by the present disease called “Bird Flu （禽流感）”.

Soon after the mud-rock flow hit Zhouqu, Gansu Province, many soldiers came to the ______ as many people were trapped underground.