I won’t tell the student the answer to the math problem until he on it for more than an hour.
In order not to _____ in front of the audience, the speaker spent many hours preparing his speech.
—I’m leaving for China with my parents next weekend. —Really? _____!
The newly built dining hall ,which is ______the old one., will open to students next Sunday.
This machine_____ .It hasn’t worked for years.
I knocked at the door hard,and soon the door opened and a _____ face looked out, “ who is troubling me at this time of night.”