猜谜语。

桃李芬芳满天下,传道授业解惑人。  （猜一职业）     

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    One morning Mr. Green is driving around the county and1 a small bookshop. When he sees an old man 2 the side of the road, he stops his car and says to the old man, " Excuse me, I want 3to the Sun Bookshop. Do you know it? " " Yes." the old man answers, "I 4 you the way. " He 5 Mr. Green ’s car, and they drive about twelve miles. 6 they come to a small house, the old man says, " Stop here. " Mr. Green stops and 7 the house. "But this isn't the 8 ,  " he says to the old man." Right.” the old man answers ."This is my house ,and now I’ll show you the 9 to the book-shop. Turn around and go back nine miles. 10You'll see the bookshop."