The English spoken in the United States is only slightly different from spoken in England

问题补充：

The English spoken in the United States is only slightly different from spoken in England.

A. which

B. what

C. that

D. the one

答案：

A. which

B. what

(答案→)C. that

D. the one

解析：that用来指代前面的名词The English,以避免重复。题意是“美国英语现和英国英语只有很微小的差别了。”在英语中，that还常可以用来指代人口、天气、金钱等。如： The weather here is hotter than that in the north of the country. 面对这种句式结构较复杂的句子，首先要抓主干。如果spoken前有is，则B项也成立。