. The thing that _______ is not whether you fail or not, but whether you try or not.
The ground is _______ with _______ leaves.
The library's study room is full of students _______ for the exam.
The scientists were waiting to see the problem _______.
The foreigner tried his best, but he still couldn't make his point _______ .
People _______ in the city do not know the pleasure of country life.