______ environmental damage is done, it takes many years for the ecosystem to recover.
| A．Even if | B．If only | C．While | D．Once |
It just isn't fair ________ I was working as a cleaner last month; my friends were on a visit to Dalian.( 2012·湖北八校联考)
| A．whenever | B．though |
| C．for | D．while |
The husband rushed to the hospital ________ he heard that his wife was injured.(2012·天津六校联考)
| A．the moment | B．for the moment |
| C．direct | D．in a moment |
Just use this room for the time being, and we'll offer you a larger one ________ it becomes available.(2010·安徽)
| A．as soon as | B．unless |
| C．as far as | D．until |
Because of the heavy traffic，it was already time for lunch break ________ she got to her office.(2010·四川)
| A．since | B．that | C．when | D．until |
The ability________an idea is as important as the idea itself.(2011·湖南)
| A．expressing | B．expressed |
| C．to express | D．to be expressed |