—Are Grace and Joe coming to “Happy Camp” by plane?—I’m not sure. It is said that their father ________ drive them here.
Mike went to the library ____ some books the day before yesterday.
Nancy _____ playing the piano at 7pm. yesterday.
The Great Wall of China is ______wall in the world.
_____ is not difficult to learn English well.
We can still do the work better with_____ time and______people.