Read the passage carefully and answer the questions that follow.
Ronald was on his way to school when he saw a blind man. The blind man was waiting to cross the road. There was nobody around to help him. Ronald went up to him. He held the blind man by the elbow and led him across the road. The blind man was very grateful. Ronald learnt that the blind man wanted to go to the post office. Ronald brought him to the post office before he rushed to school. when he reached his school, he was very late. Ronald explained to his teacher what happened. His teacher did not scold him. Instead, she praised him for his kindness.
51. What was the blind man doing when Ronald saw him?