摘要：11． environmental damage is done, it takes many years for the ecosystem to recover． A．Even if B．If only C．While D．Once
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_______environmental damage is done, it takes many years for the ecosystem to recover．
|
A．Even if |
B．If only |
C．While |
D．Once |
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_______environmental damage is done, it takes many years for the ecosystem to recover．
A．Even if B．If only C．While D．Once
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_______environmental damage is done, it takes many years for the ecosystem to recover．
| A．Even if | B．If only | C．While | D．Once |