根据汉语提示,完成下列句子1.They often （provide）（assistances）（for）（向.提供帮助）the poor children
2.Have you （spent）the whole holiday （working）（花.时间工作）in the hospital
3.Though they have been away from the school for twenty years ,they still（keep）（in）（touch）（with）（保持联系）each other
4.I have （witnessed）the changes in Fuzhou（personally）（亲眼目睹）
5.An accident （happened）（to）（发生）him yesterday
6.She works very hard .She （has）（made）（great）（progresses）（已经取得了很大进步）
7.（In）（order）（to）（为了）support his family he（has）（to）（不得不）work very hard every day
8.我曾经给残疾儿童讲故事.（ever ,told ,disabled）
I have ever told stories to the disabled children.