We can’t work out the physics problem. Can you tell us ________

If you want to get more information about English learning, please visit our _______.www.yyxx.cm.

Dick insisted he nothing wrong, and should not be criticizedWhy?—Because he couldn’t help but tella white lie

When did the World Exposition(世博会) in Shanghai begin–The Expo began ________ May 1, 2010.

The door burst open and________, shouting with anger.