Get down to the experiment right away if possible,__________ you will not finish it before dark.
Since you are in a public place, the noise of your radio must be ______ to a level that we all feel comfortable with.
The two men who had drunk too much stood ________ at each other on the road as if they were very angry with each other.
Nancy ________ for hours aimlessly along the street, and was unwilling to go back home to face her parents.
We had estimated the number of visitors to our school’s hundredth anniversary at about 400, but the __________ number was much higher.
Driven by __________, I asked the interviewee a personal question, which made him quite surprised.