题目内容：

One Sunday afternoon, my younger brother and I were left alone at home. I was doing my homework________my younger brother was watching TV. Suddenly, the doorbell rang. My brother thought it was our parents, so he opened the _______quickly.

      A tall man stood outside and ______ politely if our parents were at home.

      Without thinking, my brother said, "No." When I wanted to close the door, he suddenly   ____the door very.- hard and came into our house. He took out a _______ and ordered me to tie up my brother's _______  with a rope. I tied up his hands in a special way so my brother could untie (松开) himself _______ . The man then tied my hands up and locked_________ of us in the kitchen.

      Soon, he went upstairs. I taught my brother to _______ his rope with his hands. He then untied ______. I rushed to the telephone to call the police, _______the line was cut off. Tile doors were all locked from outside. It was lucky that the man forgot to ________ the kitchen door. We got out of the house through the window and went to the nearest pay phone to call the police.

     Soon the police came and ______ was caught. By the time, my parents came home. We told then the ______ story. My parents were glad that we were not hurt. They told me that I should stop my brother from  _______ the door to a stranger. I learned a lesson on safety.

1.A. when    B. before    C. after    D. while

2.A. cupboard    B. door    C. doorbell    D. window

3.A. guessed    B. asked    C. argued    D. cried

4.A. pushed    B. pulled    C. knocked    D. closed

5.A. candy    B. gift    C. knife    D. phone

6.A. feet    B. legs    C. hands    D. arms

7.A. hardly    B. easily    C. suddenly    D. difficultly

8.A. all    B. each    C. neither    D. both

9.A. make    B. tie    C. untie    D. use

10.A. me    B. myself    C. him    D. himself

11.A. but    B. and    C. or    D. as

12.A. break    B. lock    C. move    D. see

13.A. my father    B. my mother    C. my brother    D. the man

14.A. happy    B. whole    C. usual    D. same

15.A. turning    B. sending    C. opening    D. closing