—Are you satisfied with what he did？　　—No， it couldn’t have been ______.

Paul attends very ________ meetings，and when he does，he has very ________ to say．

 This kind of exercise is most _______, and therefore is a good test of your students’ ability.

The shop-assistant was straight with his customers. If an article was of _____ quality, he'd tell them so.

His uncle made a film _______ his story in his childhood.