when does the class begin?怎么回答

when does the class begin?怎么回答 when dose the class begin是什么意思怎么回答 When does summer vacation begin?怎么回答 when dose the class begin? when does the school begin When does the unistiy begin. 1.() does the first class begin? When does the class begin?Please tell me.（改为宾语从句） When is the class meeting?怎么回答 What time does the class begin?=( )( )does the class begin? when will the weather forcast begin 怎么回答 用英文 When does the winter vacation begin?