The professor’s research finally proved to be ______, though he had spent a lot of money on it.
| A．priceless | B．valuable | C．worthless | D．worthwhile |
she is not so healthy she used to be?
| A．How it is that; as | B．Why is it that; as |
| C．Is it why; that | D．How is it that; what |
Two hours away from the tall buildings of New York .
| A．some of the world’s largest bears live |
| B．lives some of the world’s largest bears |
| C．do some of the world’s largest bears live |
| D．live some of the world’s largest bears |
During the examination we are required to stay in our seats, keep our eyes on our work, to anyone.
| A．instead of speaking | B．rather than speak |
| C．and not to speak | D．but would not speak |
As it turned out to be a small house party, we so formally.
| A．needn’t dress up | B．did not need have dressed up |
| C．did not need to dress up | D．needn’t have dressed up |
--- It’s five years since I was a singer.
--- Not really! ?
| A．Are you a singer | B．How’s that |
| C．What do you mean | D．Is it a strange idea |