Food prices increased ________ 10% in less than a year.
| A．for | B．to |
| C．by | D．at |
—I'm leaving for the doctor's this afternoon.
—OK, but make sure __________ when you leave.
| A．to lock up |
| B．for locking up |
| C．you lock up |
| D．you locked up |
The patient hasn't got a fever. In other words, his temperature is __________.
| A．common |
| B．normal |
| C．unusual |
| D．ordinary |
The seriously __________ people in the car crash were taken to hospital to be treated.
| A．injuring |
| B．wounded |
| C．hurt |
| D．injured |
Canada is one of the countries that __________ a free education system __________ by the government.
| A．have ； to pay |
| B．has ； pay for |
| C．have ； paid for |
| D．has ； paid |
Dr. Smith is so crazy __________ the treatment of drug addict that he was chosen __________ captain of the medical team.
| A．about；/ |
| B．for；the |
| C．with；a |
| D．at；/ |