At the opening________of the school, our headmaster gave a short speech.
The doctor was busy writing an essay in ________ with his recent research.
A thousand words will not leave so deep an ________ as one deed.
—Mr. Black, I think you have good taste in ________ art. So would you like to take ________ look at the painting?—Yes, I'd love to.
Though you've got a tight schedule these days, I should be ________ if you could spare time to attend our meeting today.
—Can you describe a distinctive characteristic of this animal?—Its neck can be extended ________ of its body.