All the members cannot use these at the same time.

You are using energy all the time, even at rest.

You can't use voice and data at the same time.

He couldn't use his left hand at all, not even to give back change.

Use the space at the top left of the form.

In many cases you're better off not using anything at all.

As a race, do you ever use it at all?

But he had to use it at exactly the right moment.

But it is the way of my people to use light words at such times and say less than they mean.

Remember to use it at the same time each day.