children believe they can succeed, they will never become totally independent.
Not until I dropped off from school ____ how much time I had wasted.
----Why don’t you ______ to a more sensible method? ----Well, I’m thinking about it.
—May I watch TV for another 15 minutes, Mum?—Oh, dear, if you _____.
The entire hall burst into a great cheer and applause _______ the Nobel Prize winner appeared on the stage accompanied by the chairman.
John has determined to _______ teaching in the quake-hit area when he graduates from university.