The USA is a large country in ________ many different dialects are spoken.
| A．that | B．which | C．where | D．it |
It was believed that things would get worse, but ____ it is they are getting better.
| A．before | B．as | C．because | D．after |
--- The MP3 cost me about 2,000 yuan.
--- Well, it was crazy of you to spend so much money_____you could buy a cheaper one.
| A．when | B．unless | C．if | D．because |
--- Do you have a plan for National Day holiday?
--- I’m going to Thailand with my parents.
--- _____.
| A．You don’t say | B．You can say that again |
| C．Good luck to you | D．I dare say |
This problem may lead to more serious ones if ____ unsolved.
| A．left | B．remained | C．keeping | D．making |
After the professor____out the project made a comment on the report, the media focused on it.
| A．was opposed to carry | B．opposed to carry |
| C．opposed to carrying | D．opposed carrying |