While income worry is _______ rather common problem of the aged, loneliness is another problem that ________ aged parents may face.
---Mike, our team will play against the Rockets this weekend. I’m sure we will win. ---________!
I don't think the experiment is ___ failure, because it has provided us with ___valuable experience for our future tests.
As is known to us all, under no circumstances______ temporary economic development at the expense of the environment and resources.
We don’t care if a hunting dog smells _____, but we really don’t want him to smell ____.
The present question is ____ many students consider it impossible ____ is really possible if effort is made.