一、语法填空(根据课文内容、依据语法规则完成下面短文）
When they were in Tibet, it was already snowing, 1________ it was autumn. Sometimes they looked like snowmen 2_________ (ride) bicycles. On the road children 3________ (dress) in long wool coats stopped to look at them. Wang Wei was very 4________ (rely) and rode in front of Wang Kun as usual. The view around 5________ (they) was so beautiful that they were surprised.
