He failed in the exams and only then _____ how much time he had wasted.
| A．he realized | B．did he realize | C．he had realized | D．had he realized |
__________ the growing number of patients, the clinic had to extend its service from five days to seven days a week.
| A．To accommodate |
| B．Accommodating |
| C．Being accommodated |
| D．Accommodated |
The owner of the shop asked his assistant to__________ the pears that can be thrown away.
| A．work out |
| B．make out |
| C．sort out |
| D．figure out |
Many people __________ the opening ceremony of the 2010 World Expo, which was so amazing.
| A．witnessed |
| B．participated |
| C．swallowed |
| D．handled |
Employees are entitled to a(n) __________ paid leave of fifteen days.
| A．annually |
| B．annual |
| C．anniversary |
| D．relative |
Mr. Smith bought a new house with a big garden ,which became the __________ of his neighbours.
| A．envy |
| B．admiration |
| C．respect |
| D．pride |