11. The public has plained that large quantities of waste water into rivers without being cleaned, so large amounts of money to solve the problem.
A. have poured; is needed
B. has poured; are needed
C. have been poured; is needed
D. have been poured; are needed
网友回答
A. have poured; is needed
B. has poured; are needed
C. have been poured; is needed
(答案→)D. have been poured; are needed
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