Have you watched the film “Avatar”?— Not yetBut I the film is worth watching

The photo was taken ______ stood the famous Bird’s Nest in Beijing during the Olympics.

Can you go to the movie with me tonight—______. I have the flu.

If the researchers are successful, they an important step in reproducing the way that humans use cognition（认识力）to interact（交流；互动）in their world．

I’ve read another book this week.— Well, maybe _____ is not how much you read but what you read that counts.