【2012山东东营】阅读下面短文，用括号内所给动词的适当形式填空 (必要时可加情态动词或助动词)。
Afel was only a small boy when he first saw snow in a picture book. In the pictures he saw a lot of children (61) ______ (play) in the snow.
Afel didn’t understand what snow was. But he dreamed about snow all the time. He dreamed of being able (62) ______ (fly) across the snow.
One day when he was twelve, Afel (63) ______ (watch) TV at his uncle’s house. The program was full of snow. Not only snow – there were people flying across the snow.
“Look! They (64) ______ (fly)!” he shouted excitedly.
The snow, and the people… It was just like one of his dreams.
