The classroom wants __________.
After ________ hard, I got a job in a gold mine.
It's helpful to put children in a situation ________ they can see themselves differently.
After visiting China,most of the foreign friends said they would never forget the time ________ they had spent in China.
- Where does Mr. Black Live ? Can you guess?- Sorry , I can’t guess ________.
I’m sorry I didn’t hear what you said. I ________ the picture.