His aunt’s letters him of those beautiful days when they used to live together in his hometown.
A. call up
B. call for
C. call on
D. call at
网友回答
(答案→)A. call up
B. call for
C. call on
D. call at
解析：call up：想起某事物.回忆某事，call for：需求.需要，call on：号召.请求拜访（某人），call at：拜访（某地）。他婶婶的信使他想起了他们在一起度过的日子，故选A。