Shy people often avoid situationswould force them into close contact with other peopleA.

问题补充：

Shy people often avoid situationswould force them into close contact with other people．

A. which

B. where

C. when

D. what

答案：

(答案→)A. which

B. where

C. when

D. what

解析：考查定语从句：句意：害羞的人经常避免让他们和其他人密切接触的情况。先行词是situations，定语从句中缺少主语，用关系代词which引导定语从句，选A。