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