The weather turned out to be very good was more than we could expect.A. whatB. whichC. t

问题补充：

The weather turned out to be very good, was more than we could expect.

A. what

B. which

C. that

D. it

答案：

A. what

(答案→)B. which

C. that

D. it

解析：考查非限制性定语从句。根据逗号可知，本句是一个非限制性定语从句，that不能引导非限制性定语从句，what不能引导定语从句，it不能引导从句，排除A、C、D，故选B。