A school boy wanted to ask for two days off（请假）, but he only learnt the phrase（短语）" have a day off". He thought and (1) , then he had an (2) .
He came to the teacher's office and said," Mother is ill. May I have a day off, sir?" "Of course, you can," replied（回答）the teacher at once.
The boy walked away. And then he (3) turned back and knocked（敲） (4) the teacher's door (5) , "May I have a day off again?" he said.
The teacher was very (6) . "Didn't you say it (7) ?"
"Yes, sir. But I can't be here the day after tomorrow, either（也）."
The teacher understood him and could not help laughing（禁不住大笑起来）. He said (8) (9) smile, " Why (10) you say, 'May I have two days off?' "