Was the door of the room _______ the whole day?[ ]

It will be at least three years _______ we get to meet again

Skimming is quite different from scanning it is an effort to get general information rather than detailed facts.

Can we meet tomorrow afternoon?—Not in the afternoon ,I’m afraidI____________

It was from May 1 to October 31,2010____________the World Expo 2010 Shanghai will be held, _____________is a great event for the Chinese people