4. Watching the sunrise will cost every tourist $20 a night in the hotel on the top of the mountain, breakfast.
Half an hour has been made full ______ of _____ the problem.
—How did the fire_____? --By a car accident.
In China, smokers have to face the reality that ______ people are dying of lung cancer.
Please tell me ______ you are getting on with your new classmates.
Although we often send emails to each other, we have never seen each other ______.