His aunt’s letters memories of those beautiful days when they used to live together in his hometown.
A. call at
B. call for
C. call on
D. call up
网友回答
A. call at
B. call for
C. call on
(答案→)D. call up
解析：A. call at拜访，B. call for需要，C. call on号召，D. call up唤起，句意：他阿姨的信唤起了那些美丽的日子的记忆，当时他们一起住在他们的家乡。选D。