问题补充：
Can you think of a situation people communicate only by meansof bodylanguage?
A. that
B. which
C. where
D. when
答案：
A. that
B. which
(答案→)C. where
D. when
解析：考查定语从句。本定语从句的先行词是situation,定语从句中很完整，故使用关系副词。在定语从句中，如果先行词是case, situation, stage等抽象名词的时候，关系副词使用where.故C正确。
