Many of the students did not have much k_____ of American history.
问题描述：
Many of the students did not have much k_____ of American history.
答
您好：
knowledge .
很多学生并没有知道关于美国历史的知识.
希望我的回答对您有帮助,祝好!
祝您学习进步!
如果不懂建议重新提问,也可以直接追问哦.On the shelf you can see all the CDs that my sister c_________.collects.收集。希望我的回答对您有帮助，祝好！ 祝您学习进步！ 如果不懂建议重新提问，也可以直接追问哦。