______ environmental damage is done，it takes many years for the ecosystem to recover．
| A．Even if | B．If only |
| C．As if | D．Once |
The gardener was called to tell the way __________ the poor dog had died.
| A．that | B．which | C．in that | D．of which |
A man with a bleeding hand hurried in and asked, "Is there ahospital __________ I can get some medicine for my wounded hand?"
| A．that | B．which | C．where | D．what |
Because he failed to pay his bill, the company __________ his electricity.
| A．cut off | B．cut out | C．cut up | D．cut down |
"Long time no see" is __________ sort of informal. But it is part of __________ language that Americans use daily.
A. the; a B. a; the C. /; the D a; a
Your suggestion sounds interesting, but they need a (n) __________ one to get out of the mess.
| A．impressive | B．traditional | C．practical | D．similar |