题目内容：

My friend Vernon Davies kept birds. One day he called and told me he was going away for a week.He asked me to feed _1._     birds for him and said that he would leave the key_2._     his front door in my mailbox.

_3._     (fortunate), I forgot all about the birds until the night before Vernon was going to return. What was worse,_ 4._     was already dark when I arrived at his house. I soon found that the key Verson gave me could not unlock either the front door _5._     _the back door. I was getting desperate. I kept thinking of6._     _Vernon would say when he came back.

I was just going to give up7._     _I noticed that one bedroom window was slightly open. I found a barrel and pushed in under the window. As the barrel was very heavy, I made a lot of noise. But in the end, I managed to climb 8._     _and open the window.

I actually had one leg inside the bedroom when I suddenly realized that someone _9._     (shine) a torch up at me. I looked down and saw a policeman and an old lady, one of Vernon’s neighbors. “What are you doing up there?: said the policeman._ 10._     _(feel)like a complete fool, I replied,”I was just going to feed Mr Davies’ birds.