There is no doubt      the earth is becoming warmer.

—Daniel must have lost his job in that unemployment crisis,      he?—I don’t think so. Yesterday I saw him working together with his colleagues. 

I was about to leave my house______ the telephone rang.

_____ is known to us all is _____ the theme of Shanghai Expo is “Better city, better life”.

 _______ to be much chance of our catching him up in the near future.