那场同学聚会勾起了我们对学生时代的回忆。

The class reunion ___brought up memories of our school days.

工人们正在疏浚河道，清除河底的淤泥。

Workers are ___dredging the river to remove the mud at the bottom.

他在旧箱子里翻找，终于找到了那张老照片。

He ___dredged through the old box and finally found that vintage photo.