根据短文内容，选择正确答案。 I am an English girl. My name is Lily. I'm thirteen. I am at school. Look! This is my school. It is No. 14 High School. I am in Class 1, Grade 1. I'm in Row 3. I have a good friend in No. 12 High School. She is a girl. Her name is Mary. She is not at school today. I think she's at home. My Chinese teacher is Miss Gao. She is a very good teacher. I don't know her age. But I think (想) she isn't very old. 1. I am an _______ girl [     ] A. English B. good C. Chinese D. Japanese 2. Lily is ________. [     ] A. thirteen B. eleven C. fifteen D. ten 3. _______ is not at school today. [     ] A. I B. She C. Mary D. Miss Gao 4. I don't know _______ age. [     ] A. Lily B. Miss Gao C. Miss Gao's D. Mary's 5. Lily's friend _______ a boy. [     ] A. isn't B. is C. not D. are