短文填空：（本大题共10空，每空0.5分，共5分）
A schoolboy wanted to ask for two days off,but he has only learned the phrase‘have a day off’.He thought and t_______,then he had an i_______.
He came to the teachers’ office and said,‘My mother is ill.May I have a day off,sir?’
‘Of course,you can,’answered the teacher at once.The boy walked away.As soon a______he was out of the office,he turned back and knocked a______the teacher’s door a______,‘May I have a day off again?’he asked.
The teacher was very s_____,‘Didn’t you say it just now?’
‘Yes,sir.But I can’t be here the day after tomorrow,e_______.’
The teacher u_______ the little boy and began to l______.Then he said with a smile,‘Why d_______you say,‘May I have two days off?’’