There is a real possibility that these animals could be frightened, a sudden loud noise.
This problem is said _______ three times, but he still can’t understand it.
---I heard that you made a bicycle trip to the 2010 World Expo of Shanghai alone. ---No. Actually, my friend Bob ________ me.
I went the village yesterday_________ to see my uncle, who lived there for 20 years.
The problem of the present world is that those who are imaginative have little experience_________those who are experienced have weak imagination.
He ran all the way to the station only _______________ the train had already left.