Such things ______ you described are rare now.
| A． as | B． that | C． which | D． what |
________we have enough evidence，we can’t win the case.
| A．Once | B．As long as |
| C．Unless | D．Since |
________ small，the company has about 1,000 buyers in over 30 countries.
| A．As | B．If |
| C．Although | D．Once |
I took my driving license with me on holiday，________I wanted to hire a car.
| A．in case | B．even if |
| C．ever since | D．if only |
It’s not easy to change habits，________with awareness and selfcontrol，it is possible.
| A．for | B．or |
| C．but | D．so |
Don’t turn off the computer before closing all programs，________you could have problems.
| A．or | B．and |
| C．but | D．so |