You won’t pass the exam _____ you don’t work hard.
There are forty-eight ____________ doctors in this hospital.
-What's the __________ of the ticket?-It's about five hundred yuan.
-Before I enter the competition, I want to know the __________.-The winner can get a gold medal.
Many people are thinking of new ways to fight the pollution of the __________.
Mr. Brown had got a __________ and he went to see a dentist.