The road conditions there turned out to be very good was more than we could expect.A. it

问题补充：

The road conditions there turned out to be very good, was more than we could expect.

A. it

B. what

C. which

D. that

答案：

A. it

B. what

(答案→)C. which

D. that

解析：后部分是对前部分的补充.题意是 “那儿的路况结果很好,比我们原想的还好.”

what不是关系代词不引导定语从句，that一般不引导非限制性定语从句。it干扰性大，如果在逗号后加连词and，则选项A成立。