In spite of allhas been said quite a lot of people are still uncertain about the prices of

问题补充：

In spite of allhas been said，quite a lot of people are still uncertain about the prices of housing in China．

A. that

B. what

C. which

D. as

答案：

(答案→)A. that

B. what

C. which

D. as

解析：考查定语从句。定语从句That has been said修饰先行词all. All是一个表示事物的不定代词，在定语从句里做先行词要使用that指代它。本句中that指代all,在句中做主语。句意：尽管已经说了很多。有很多人对于中国的房价仍然不敢确定。