分词 定语从句
The natural pattern of the Tennessee River was characterized by large spring flows____ destructive floods and low summer flows that inhibited navigation.
A that produced B producing
哪个对,哪个错?为什么?
Two of thses laws,the Tennessee Valley Authority Act of 1933 and the Mational Recovery Act of 1993,had been particular significant for water resource development.
had been particular significant
had particular significance.哪个对?