根据句意填空

One day 　　　　 he was working, he fell ill.

One day an American went to a small town in South America for his holidays. Few people went there because it was far away from the cities. He fell ill and wanted very much to see a doctor.

The American wanted to find out a fine doctor there. A man told him. "That's very easy. If there is a patient that a doctor can't cure(治愈), the doctor has to put a balloon(气球)over his clinic."

The American thought, "The less balloons are, the better the doctor is. "He began to look for the best doctor along the street. First he found a clinic. There were 20 bal-loons. After a few minutes he found another one, which had 30 balloons. He thought neither doctor was fine.

At last he found the third clinic that was new, and only 5 balloons were there. He was very happy and went in. "Wait a minute," said the doctor.” I’m too busy, you know. I have to put some balloons. " The American looked at the new clinic and asked,” When did you open yours?" The doctor answered, "It was only yesterday l" The American was very much surprised and said to himself, "Where can I find the best doctor?"

      1. __________went to the small town for their holidays.

          A. Many people    B. Some people

C. Most people     D. A lot of people

      2. The American wanted to see a doctor because__________.

          A. he didn't feel well           B. he was very happy

          C. he was very tired             D. he was a doctor, too

      3. It was ____________ to find a fine doctor in the town.

          A. easy           B. not hard       "C. dangerous        D. difficult

      4. If the three doctors opened their clinics at the same time, which one do you think is the best?

A. The first one.     B. The second one.

C. The third one.     D. No one.

5. The third clinic was

     A. a new one       B. an old one 

    C. the best         D. the worst