This is the place the foreign guests are going to visit.A. 不填B. whereC. whatD. when

问题补充：

This is the place the foreign guests are going to visit.

A. 不填

B. where

C. what

D. when

答案：

(答案→)A. 不填

B. where

C. what

D. when

解析：考查定语从句.本题定语从句的先行词是the place,定语从句中动词visit后面缺少宾语，故使用that/which指代先行词在句中做宾语，可以省略。BD项是关系副词，不能做宾语；C项不是定语从句的关系词。故A正确。