— Joe, what about going to Belgium for our coming holiday?
— Sorry, honey, I _________ on the newly discovered dinosaur site in Argentina. There are remains of what is thought to be the largest creature ever to walk the earth.
| A．was working | B．work |
| C．will be working | D．worked |
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 |