1. Who ________ a theory about black holes?
A．put forward B．put down C．put away D．put off
2. A woman liked the water from the pump so much that she had it ________ to her house every day.
A．deliver B．delivered C．delivering D．to deliver
3. The colorful design _______ sixty candles and a flag will appear on the People Square on October 1.
A. consists of B. consisted of C. to consist of D. consisting of
