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标题: OG 62,help! [打印本页]

作者: mzhxt 时间: 2007-5-2 13:03
标题: OG 62,help!

A 1672 agreement between Canada and United States reduces the amount of phosphates that municipalities had been allowed to dump into the Great Lakes.

A: reduces the amount of phosphates that municipalities had been allowed to dump

D:reduces the amount of phosphates that municipalities are allowed to dump

帮我看看选哪个？谢谢！

作者: Jolin_hz 时间: 2007-5-2 15:37

none is right, reduced&are allowed to

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