Certain that Cal was either captured, dead, or well away, she brought up the pistol and let it do its thing.

But it is already almost certain that his "three represents" theory will be the centerpiece at the major party congress this fall.

Make certain that no Alliance forces are anywhere in the vicinity.

"Are you certain that one of his shuttles can't reach yours?"

This will not only enhance the possibility of success, but also make certain that the action proceeds without.

We can be certain that the whole Moon's looking for us.

"Can you be so certain that the Undercity is similarly pleasant?"

Make certain that all the wire services and the international reps get the word.

"Are you certain that this thing's going to work?"

But why should we be reluctant simply to change clause 2 to 'a is certain that p '?