填空题

As previously ______ (state), these unanswered questions suggest areas that are in need of further study.

【参考答案】

stated

<上一题目录下一题>

热门试题

填空题

The scientist tried the experiment again and again ______ (regard) of the failure.

填空题

He was interested in history when he was a child and later became a ______ (history).