On the top of this mountain, you can get a wonderful ________ of the nearby hills.
This problem may lead to more serious ones if ____ unsolved.
reasonable, the proposal heattracted much attention.
—I saw your uncle take a taxi to the airport.Why didn’t you drive him there? —I,but my car.
The door.Something has gone wrong with it.
The difference in achievement between the pupils are partly ________by their differences in age.