This is the biggest lab we have ever built in our university. A. whichB. whatC. thatD. Whe

问题补充：

This is the biggest lab we have ever built in our university.

A. which

B. what

C. that

D. Where

答案：

A. which

B. what

(答案→)C. that

D. Where

解析：考查定语从句。本题定语从句的先行词lab前面有形容词的最高级the biggest,后面句中动词build后面缺少宾语，故使用关系代词that。