While ____ in tea with that dealer, Mr. Smith had himself ____.
| A．trading; ripped off | B．buying; ripping off |
| C．selling; ripped off | D．purchasing; rip off |
People who are really in need of houses will suffer heavy losses ________ the government takes measures to bring down house prices.
| A．if | B．in case | C．unless | D．since |
________ hard one may work, one cannot master a foreign language in a month or two.
| A．Whenever | B．Wherever |
| C．Whatever | D．However |
________ I really don't like art, I find his work impressive.
| A．As | B．Since | C．If | D．While |
________ he has limited technical knowledge, the old worker has a lot of experience.
| A．Since | B．Unless | C．As | D．Although |
The village has developed a lot ________ we learned farming two years ago.
| A．when | B．which | C．that | D．where |