When does summer vacation begin?怎么回答

When does summer vacation begin?怎么回答 When does the sky get dark in summer 这句话对吗? [ ]does summer last in your hometown About three months.A How much B When C How far D How long when does she ofen does When are your summer holidays? one swallow does not make a summer how long does summer last 怎么回答 when does the chass 什么是VAC vac是什么意思 英语试题2Glaciers begin to form------more snow falls during the winter than melts and evaporates in the summer.A is whenB when there areC whenD when does为什么选C 不是B When summer comes,the days get_. When is your summer holiday?怎么回答 When The Summer'S Gone 歌词 什么时候用when does when is /are When does the unistiy begin. When does it rain money? When does the sun rise?