1 . The mother can’t stand to see her baby_______alone at home. (leaving/left)

2 . In the morning people woke up and found the world outside their houses completely_______. (changing/changed)

3 . He was disappointed to find his suggestions_______down. (turned/turning)

4 . To his surprise, Jack found his son_______as Santa Claus on Christmas Eve. (dressed/dressing)

5 . You begin to understand how Chinese speakers have their thoughts_______, and how they understand things. (organizing/organized)