_______environmental damage is done, it takes many years for the ecosystem to recover．
| A．Even if | B．If only | C．While | D．Once |
相关试题
--- When shall we meet again, Tom?
--- Make ______ day you like; it’s all the same to me.
| A．that one | B．it any | C．it another | D．that some |
As a result of the serious earthquake, two-thirds of the buildings in that area _______.
| A．need repairing | B．needs to repair |
| C．needs repairing | D．need to repair |
Every athlete as well as some coaches who ____ to go to the Games ____ asked to be here before 7:30 am.
| A．are; are | B．is; is | C．are; is | D．is; are |
His parents both died in the traffic accidents, ________ him a lot of debts.
A．having left |
B．left | C．to leave | D．leaving |
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