完形填空．

　　Mr and Mrs White are very forgetful. For example, Mr White sometimes goes to work on Sunday morning, because he thinks it is 1 . And Mrs White sometimes forgets to cook supper for the family.

　　One summer they planned to 2 to New York for their holidays. They got to the airport only ten minutes 3 the plane took off. So time was short. But 4 Mrs White said she must tell Mary, their daughter, not to forget to 5 the front door when she went to school. But Mary then was at school. They couldn't tell her about it by 6 , so they hurried to the post office. Mrs White wrote a short note to Mary, and Mr White bought a 7 and an envelope. Soon the note was ready. They put the stamp on the envelope in a hurry and dropped it in the letter 8 , but suddenly Mrs White began to cry. The short note was 9 in her hand. She had put the plane tickets in the 10 .

1．

[　　]

2．

[　　]

3．

[　　]

4．

[　　]

5．

[　　]

6．

[　　]

7．

[　　]

8．

[　　]

9．

[　　]

10．

[　　]