读句子，选答语。
A. She is my sister.
B. They are in the kitchen.
C. No, they aren't.
D. He's a student.
E. No, she isn't.
中国是礼仪之邦，礼仪文化历史悠久，博大精深。为弘扬中国的礼仪文化，学校准备举行“礼文化”为主题的活动，请你参加。
