问题
选择题
It was at the shopping center ______ Mary and I had an appointment ______ I lost my necklace.
A．where；that
B．when；that
C．where；when
D．that；where
答案
答案：A
考查定语从句。前文先行词the shopping cente为下文Mary and I had an appointment的逻辑地点状语，故引导词用where，当前文已有其它引导词时，下文引导词只能使用that，故选A。