请各位英语大神看看这段文字有什么明显的错误吗?
问题描述：
请各位英语大神看看这段文字有什么明显的错误吗?
The biggest Pyramid in Giza is the Khufu Pyramid.It consists of 2.3 million stones and the weight of the pyramid is about 6.84 million tons.It is still a mystery on how they built this great pyramid in such a low level of science.During the process of construction,thousands of workers hauled the huge stones up,and piled them up layer upon layer.It took about 20 years to finish this great construction.
答
语法基本没有错误.但是第二行they这个代词第一次出现应该更明确的用当地的居民等.