--- Why does the lake smell terrible? --- Because large quantities of water polluted. A. have B. is being C. has been D. have been 查看更多

 

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—Why does the Lake smell terrible?

—Because large quantities of water_________.

  A. have polluted                B. is being polluted

  C. has been polluted            D. have been polluted

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—Why does the lake smell terrible?

—Because large quantities of water ______ .

  A. have polluted  B. is being polluted  C. has been polluted  D. have been polluted

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--- Why does the lake smell terrible?

--- Because large quantities of water _________. Ks5u

A. have polluted B. is being polluted C. has been polluted D. have been polluted

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Why does the Lake smell terrible?

-Because large quantities of water       .

A. have polluted       B. is being polluted    C. has been polluted    D. have been polluted

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-Why does the Lake smell terrible? 

-Because large quantities of water       .  

A. have polluted       B. is being polluted    C. has been polluted   D. have been polluted

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