The book was written in easy English even primary school students could understand it.A

问题补充：

The book was written in easy English even primary school students could understand it.

A. so, that

B. such, that

C. too, to

D. enough, to

答案：

A. so, that

(答案→)B. such, that

C. too, to

D. enough, to

解析：句意：这本书是写用浅显易懂的英语写的以至于甚至小学生都能看懂它。A. so, that如此……以至于，so修饰形容词，that后跟从句；B. such, that如此……以至于，such修饰名词，that后跟从句；C. too, to太……而不能，too修饰形容词，to后用动词原形；D. enough前是形容词, to后用动词原形。easy是形容词修饰 English，所以用such, 后面是句子所以用that，故选B。

考点: 考查固定搭配的用法。