摘要：29．If we had taken such effective measures much earlier, the fiver so seriously now. A．is not polluted B．would not be polluted C．had not been polluted D．would not have been polluted
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If we had taken such effective measures much earlier, the fiver ____ so seriously now.
- A.is not polluted
- B.would not be polluted
- C.had not been polluted
- D.would not have been polluted
If we had taken such effective measures much earlier, the fiver ____ so seriously now.
A．is not polluted B．would not be polluted
C．had not been polluted D．would not have been polluted
查看习题详情和答案>>29．If we had taken such effective measures much earlier, the fiver__________so seriously now.
A．is not polluted B．would not be polluted
C．had not been polluted D．would not have been polluted
查看习题详情和答案>>If we had taken such effective measures much earlier, the fiver so seriously now.
A．is not polluted B．would not be polluted
C．had not been polluted D．would not have been polluted
查看习题详情和答案>>
29．If we had taken such effective measures much earlier, the fiver__________so seriously now.
| A．is not polluted | B．would not be polluted |
| C．had not been polluted | D．would not have been polluted |