Maybe I do know a few useful things after all.
Water is one of the most useful things on Earth.
And so I decided it is a useful thing to do.
We need more jobs in which people can do useful things.
I have seen her do many useful things, but never that.
It would be quite a useful thing to know I think.
But if you've got time, and you really want the data gone, then writing more than once is a useful thing to do.
What useful thing could he keep out on the dark lake?
It was a useful thing to have in a house such as this.
That is the most useful thing you can do at this point.