阅读下面短文，根据文章大意用所给单词的适当形式填空（未提供单词的，限填一词），使文章意思完整、正确。

    Bill is a farmer. He can't write or read. One day he goes to the city (buy) something. noon, he bas lunch in a restaurant. He (sit) down at a table and looks around. He (see) some old people put glasses on before reading their books. "Oh I (know) why I can't read or write. I want to have a pair of glasses," (say) to himself. Then he doesn't (eat) anything and can't wait (go) to the shop. All the glasses very expensive. But he still buys a pair. When he puts on the glasses, he still can't read. He is angry and asks the salesman, "Why can't I read with the glasses? there anything wrong with your glasses?" "Excuse me, but can you read?" the salesman asks. "No, I can't." The salesman laughs and says nothing again.