I'm/He's/She's + v-ing 句型 — 英语选择题
题目
我叫Sam。根据提示选择正确的一组句子：我正在写字；男孩正在踢足球；女孩正在跳舞。A. I'm writing. He's playing football. She's dancing. B. He's writing. I'm playing football. She's dancing. C. I'm writing. She's playing football. He's dancing. D. I'm write. He's playing football. She's dancing.