問題詳情
5. A: Do Bill and Anna go to the same junior high school? B: No, they go to d t schools.
參考答案
答案：C
難度：簡單0.824027
統計：A(17),B(22),C(487),D(18),E(0)
用户評論
【Greenlight Ch】評論
Echo correction == repeating the error with emphasis, and using facial expressions or gesture.