填空题

Little did they realize that they（）(make) an important discovery in science.

【参考答案】

had made
<上一题 目录 下一题>
热门 试题

填空题
It is said the conference is（）(hold) in this hall next month.
填空题
By the end of this year, Mr. Brown（）(be) here for twenty years.
相关试题