He had to pause from time to time to wipe the sweat from his forehead, because the air-conditioning system _________.
| A．broke in | B．broke up | C．broke out | D．broke down |
A short, thin woman, past middle age, visited the manager and applied for the job．
| A．highly | B．much | C．too | D．well |
The next day, the group of villagers had not gone very farthey entered a very narrow passage betweentwo mountains．
| A．when | B．while | C．until | D．after |
Mr Black, who we all admire, is a kind but strict teacher．
| A．the one | B．it | C．one | D．as |
—Does your father smoke?
—,it's 2 years since he．
| A．Yes; smoked | B．No; smoked | C．Yes; smokes | D．No; has smoked |
Do you know theof the saying I just quoted?
| A．resource | B．cause | C．course | D．source |