_________ environmental damage is done, it takes many years for the ecosystem to recover.
| A．Even if | B．If only | C．While | D．Once |
I have always wondered __________ Anne managed to make such great achievements.
| A．that |
| B．if |
| C．whether |
| D．how |
As soon as she got the call from her daughter, she smiled __________.
| A．with relief |
| B．in relief |
| C．without relief |
| D．to relief |
A new notice should be put up to __________ the unwanted visitors __________.
| A．keep; in |
| B．keep; on |
| C．keep; up |
| D．keep; out |
—Look! Jessica is coming!
—It __________ her. She told me she __________ back till tomorrow!
| A．couldn't be; won't come |
| B．can't be; won't come |
| C．can't be; wouldn't come |
| D．can't have been; wouldn't come |
She was not, as a matter of fact, __________ the situation she was in.
| A．be aware of |
| B．aware of |
| C．be aware that |
| D．aware that |