题目内容：

I was at the Indian grocery store with my cart totally full to check out. There was an African American man in his1.(sixty) behind me. I told him he could go before me2.he had just two items in his hand, and he was all smiles and added, as if3.(make) fun of me. “Thanks! Why don’t you pay for my stuff too,” and laughed. I felt a little4.(embarrass)  and thought that the man had a wonderful sense of humor.

I told the lady at the check out not5.(change) him. I said I would pay for him. He said, “No, no, no, I was just kidding.” And I6.(reply) with a smile, “Yes, yes your wish is heard. Please let me do it!”

As we talked outside, he told me that the Indian herbs(草药)7.he had bought8.(be) for his friend so I should take the money. I said to him, “It is good that it is not for you. Now you can pay it forward to somebody else.” He thanked me and promised he would.

9.(eventual), I went home10.my car full of groceries and my heart full of warmth and kindness.