Not until ________ her dark glasses ___________ she was a famous film star.

Did your classmate accept your invitation?——No, he ____ refused.

We students had better ______ some sports because sports can give us a perfect figure and protect us from getting illness easily.

Professor Williams keeps telling his students that the future ______to the well-educated.

Do you have a PE lesson today—No, we don’t. We have _____ art lesson today.