When I walked past the street, seeing the children playing happily, their happy laughter memories of my childhood.
A. called in
B. called for
C. called on
D. called up
网友回答
A. called in
B. called for
C. called on
(答案→)D. called up
解析：call up表示“唤起; 使人响起”， call for表示“需要”， call on表示“号召”， call in表示“召集”，句意为：……他们欢快的笑声使我回忆起童年时代的情景，因此答案为D 。