问题
选择题
Riding on the swings and playing with the ducks in the pond _____ our children’s greatest pleasures when we took them to the park.
A．is
B．were
C．was
D．are
答案
答案：B
题目分析：考查主谓一致：句意：当我们带他们去公园的时候，荡秋千和在池塘玩鸭子是孩子们主要的乐趣。这句话的主语是两个动名词，所以谓语用复数，时间状语是when we took them to the park.所以用一般过去式，选B。