— I don’t know how to be successful. — you work hard, nothing is impossible (不可能的).
________ my father _______ my mother believes what star signs say, but I do.
The scientist is very modest. He never______.
I don’t know or not the colour matches his new shirt.
David, get up early, _______ you'll not catch the early bus.
They would rather___colours like orange or yellow than blue or white.