用几个英语单词造句characteristic 特性；特征painter 画家put forword 提出scienti

Quick decision is characteristic of him.快速决定是他的特征
he is an amateur painter.他是业余画家
He put forward a very good suggestion at the meeting.
他在会上提出了一个很好的建议.
We must take a scientific approach to the problem.
我们必须用科学方法研究这一问题.
We concluded our meeting at 9 o'clock.
我们九点钟结束了会议.