题目内容
_____________ many times, the problems were settled at last.
| A.Having discussed | B.Being discussed | C.To be discussed | D.Discussed |
D
解析这里考查过去分词做原因状语的用法,因为句子的主语是the problems和discuss是被动的关系。所以用过去分词做状语。句意是因为被讨论了很多次,这些问题最终被解决了。
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