It’ll be another 50 years _________ China is expected to reach the level of a medium developed country.
| A．since | B．before | C．that | D．when |
—Do you think Catherine likes Fred?
—__________. They don’t seem to get on very well together.
| A．It depends | B．I hope so |
| C．I imagine not | D．Sounds reasonable |
—I had the computers repaired yesterday.
—How much did they _________ for that?
| A．cost | B．spend | C．take | D．charge |
Everybody says Rebecca and John is a perfect match; no one has ever known __________ couple.
| A．a better | B．the better | C．a best | D．the best |
______ being an outstanding physician and scientist, he was an accomplished writer and a gifted artist.
| A．As far as | B．As well as | C．As soon as | D．As long as |
I’m hoping that John will let us have the car tonight; __________, I’m afraid we won’t be able to go out.
| A．even if | B．if so | C．what if | D．if not |