-Why does the lake smell terrible? -Because large quantities of water . [ ] A. h
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![-Why does the lake smell terrible? -Because large quantities of water . [ ] A. h](/pic/43_855457.jpg)
-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
试题答案
答案:D