We must _____ a new chair for the broken one.
| A．instead | B．instead of |
| C．substitute | D．take the place |
Don’t answer the phone when the cell phone is being charged, for it ________ be very dangerous sometimes.
| A．shall | B．should | C．can | D．must |
Whatever happens , Ben, ________ drugs.
| A．doesn’t take | B．not take |
| C．not taking | D．don’t take |
After _______ seemed like an hour, Michael started off on his bike for _______ his dream leads him.
| A．what; what | B．what; where |
| C．which; what | D．that; where |
Only under special circumstances ________to use the fire hose, otherwise they will be punished.
| A．are people permitted | B．people are permitted |
| C．people permit | D．do people permit |
Jessica suggested the problem worth paying attention ______ at the meeting.
| A．to be discussed | B．to been discussed |
| C．being discussed | D．be discussed |