His teacher was angry ____ him ____ his being late.
I was walking along the road _____ someone patted me on the shoulder from behind.
—What’s made Mr. Grey so sad? —_____ three tickets to the pop art exhibition.
I’m glad to learn that his attitude _____ this plan is similar _____ mine.
_____ you have the chance to study, you’d better make full use of your time.
Vincent van Gogh’s paintings were at last _____ as works of genius.