Usually E-mail is_________ than long-distance calling.
Have you ever been to London?—Yes, I have been there _______ 2000.[ ]
If farmers trees and forests, giant pandas nowhere to live.[ ]
John ________ the English club in 2012.
What do you think of the EXPO 2010?— It’s great, of course. people are going to Shanghai for the EXPO 2010.