—Have you known Dr. Jackson for a long time?—Yes,since she ________ the Chinese Society.
It’s hard to finish the work in a day. You’d better ____ your friends to help you.
There are two buildings, _______ stands nearly a hundred feet high.
The court hears about 120 cases a year; visitors are welcome to see a case ______.
If we learn to appreciate _____ is new and different, we will be well-prepared for ____ the future may have in store.
--You haven’t said a word about the design ,Mike. What’s your idea?----I’m sorry I _______ about something else just now.