I’d appreciate ______ if you could let me know in advance whether or not you will come.
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.