The professor’s house£¬big and untidy£¬stood alone at one end of a huge garden.The place was totally uncared for£¬quite   21  and overgrown with all sorts of useless things. I 22 

my way through bushes and tall weeds to the front door and rang the bell.

I was glad that I had found him. In twenty minutes he   23  me right on all the   24 

that had puzzled me. I was on the   25 £¬“You’re very fond of gardening£¬I see.” of leaving when I looked out of his study window and said