--Do you know when the Chinese custom_________ from? --It's hard to say. But its characteristics__________ the Tang Period.
We agreed to accept ________ they thought was the best professor in the college.
I don’t know who invented ________ telephone. It’s really ________ most useful invention.
In hot weather, an old tyre can break again easily it’s mended.
____ he grows up can he understand your intentions.
She is not very ____ about the idea of going camping. I think she will stay at home reading.