1。Along the east coast,American Indian women's councils could vetoa declaration of war at refusing to supply moccasins and field rations.
答案是最后一个划线的地方错了,不懂,怎么改啊?
2.Although fluorine tests and X-ray analyses,archaeologists can prove the validity of artifacts.
答案是Although错了。我想为什么不是can错了呢?改成cannot 不也对吗?