1 . Measures must be taken to protect the river from being ________ (污染) . (根据汉语提示单词拼写)
您最近一年使用:0次
名校
2 . The island has been seriously _________ (污染) by a copper mine.
您最近一年使用:0次
3 . He found that it came from the river________ (污染)by the dirty water from London. (根据汉语提示单词拼写)
您最近一年使用:0次