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)

题目：

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 (1) ______ (play) in the snow.

    Afel didn't understand what snow was. But he dreamed about snow all the time. He dreamed of being

able (2) ______ (fly) across the snow.

    One day when he was twelve, Afel (3) ______ (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 (4) ______ (fly)!" he shouted excitedly.

     The snow, and the people… It was just like one of his dreams.

     "They're skiing. It needs snow," said his uncle, "it's the Winter Olympics. It (5) ______ (hold) every

four years."

     Afel (6)______ (find)out that the next Winter Olympics would be in Sochi, Russia in 2014.

     "Perfect," he thought. "Enough time for me to become a good skier. I (7)______(go) to the

Winter Olympics, and win the gold medal for skiing."

     "But there's no snow here!" people told him. "Where are you going to ski?"

     Afel made himself a pair of skis and skied across the sand. At first he couldn't move, but he practised

and practised until he could move quite quickly.

     "How will you go to the Winter Olympics?" people asked him. "Our country (8) ______ (not, have)

a team at all. Why (9) ______ (not, do) athletics (田径) instead? We have lots of good runners. And

we (10) ______ (win) lots of medals at the Olympics."

      Now Afel is practising skiing down sand dunes (沙丘). He dreams that the yellow sand and brown

earth of the desert (沙漠) is the white snow.