Question

_____________ many times, the problems were settled at last.

A. Having discussed
B. Being discussed
C. To be discussed
D. Discussed

Answer 1

答案D
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。