Many people ________ the opening ceremony of 2010 World Expo, which was so splendid.[ ]

The job may be too hard for you， Andy. Are you sure you will take it—Yes. I have decided to_______the challenge.

Where the dictionary I can’t see it. ——I it right here a moment ago. But it’s gone.

Sally works very hard．Finally，she won the first place．(同义替换)

I don’t think we can finish all the work before Friday, ________