—Where is our English teacher?—She is in the classroom, ________ the exercises _________ the students have done at home.
Now that she is out of a job, Lucy going back to school, but she hasn’t decided yet.
It is certain that he will his business to his son when he gets old.
We the difficulty together, but why didn’t you tell me?(2012 .北京)
The airport next year will help promote tourism in this area. (2013 .四川)
You shouldn’t have an appointment with her that you couldn’t_____ .