Driving along, he had opportunity to observe any cars that might be following him.

If, however, this were a boat of some new design, there had as yet been no opportunity to observe its form.

The student will have an opportunity to observe and ask questions.

At last she had an opportunity to observe him more closely.

The doctor had the opportunity to observe for a few minutes.

At least it seemed so to me, and I had opportunity to observe.

I will be glad for the opportunity to observe you as well.

This gave him an opportunity to observe that no one was in the room.

We have had the opportunity to observe close up what this special form of democracy is all about.

Further, this scale also provided an opportunity to observe a different type of behavior because something physical was required.