I can well remember that there was once a time ________ I grew crazy about painting.until B.after C.when D.before
If there ______ no water or air on the earth, all living things would die.
--Hello, I’d like to talk to Mr. Wang. --______, please. He’ll be here in a moment.
Though _____ failure is the mother of success, everyone wishes to have ______ success.
The teacher went for further study and he said he was ______ to come back the next week.
Roylott was sitting on a chair, with his eyes ______ the window.