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--Why does the river smell terrible?
--Because large quantities of water__________.
A. have polluted B. is being polluted
C. has been polluted D. have been polluted
查看习题详情和答案>>-Why does the river smell terrible?
--Because large quantities of water__________.
A. have polluted B. is being polluted
C. has been polluted D. have been polluted
查看习题详情和答案>>--Why does the river smell terrible?
--Because large quantities of water__________.
|
A．have polluted |
B．is being polluted |
C．has been polluted |
D．have been polluted |
查看习题详情和答案>>
---Why does the river smell terrible?
---Because large quantities of water .
A．have polluted B．is being polluted C．has been polluted D．have been polluted
查看习题详情和答案>>--Why does the river smell terrible?
--Because large quantities of water__________.
| A．have polluted | B．is being polluted | C．has been polluted | D．have been polluted |