You can never be ________ when crossing the street.
| A．very careful | B．too careful | C．carefully enough | D．enough careful |
Every means, but none proved.
| A．have tried; a success | B．have been tried; successful |
| C．has tried; to be successful | D．has been tried; successful |
It’s quite honor to be chairman of the conference.
| A．///; the | B．an ; /// | C．a ; /// | D．the; the |
— Can I have a look at the menu, please?
— _______, sir, just a minute.
| A．If you like | B．You are welcome | C．It’s up to you | D．Of course |
Before going for an interview, it is important to ________ as much information as possible about the company.
| A．take out | B．bring away | C．look up | D．turn down |
It was with great joy _______ he worked out the problem that he had long been puzzled about.
| A．which | B．that | C．because | D．since |