同学你好，该知识点来自沪江网校《英语零基础直达大学六级【全额奖学金班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好~
It was easy how I got there, because today travelling is not so difficult as it was before.
前半句改成I got there easily，这里不需要表示“如何”，所以不用how

My first impressions of it were good because there were a great many things on display.
were good这里改成was good，主语是单数

Then I had a walk round the exhibition hall and found the exhibit that I liked best -- it was one of the oldest computer in the world.
it was可以省略，computers应该是复数，……之一，后面用复数，比如
This is one of the most commonly used methods.
这是最常采用的方法之一。

The computer was made in 1964 and it was as large as houses were.
as large as a house 像一座房子那么大，这样说比较合理，不需要用复数

祝同学学习进步~