从A-G选项中选出能填入空白处的最佳选项补全对话。选项中有两项是多余的

A: What are you looking for?

B:  I am interested in history these days. I want to know something about Zheng Chenggong. Oh, you are a history lover.

A: Sure. He recovered Taiwan in 1662 without the help of the government.

B:    

A: It was true, and     

B: What a pity! But all Chinese will remember him forever

A: You're right. You'll know more after you finish reading the books about him.

A. Is that so? B. Could you tell me some things that he did? C. I'm looking for a history book. D. because of his great contribution E. he lost his sister in the battle. F. Anything else? G. How great!