单项选择题

Smoking is considered dangerous to the health. Our tobacco-seller, Mr. Johnson, therefore, always asks his customers if they are very young.
One day, a little girl whom he had never seen before walked straight into his shop and demanded twenty (1) . She had the large amount of money in her hand and seemed very (2) of herself. Mr. Johnson was so (3) by her confident manner that he forgot to ask his (4) question.

3（）

点击查看答案&解析