You _____ lose your way if you walk alone in the mountains at night.
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.