Are you still hoping and waiting for someone somewhere to come to your rescue, wave a magic stick and immediately change your life for _________?
We should take effective measures to the infectious disease.
Since Tom downloaded a virus into his computer, he cannot open the file now.
If you are from doing something, you are officially prevented from doing it.
The school offers many _____ activities for the local students.
It is ______ that the noise around us is a(n) _______ to our health and well being.