You’d better take something to read when you go to see the doctor___you have to wait
— I regret _______ you that you failed the exam. — How I regret _______ so much time playing computer games.
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.