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- When did the robbery happen? 抢劫案什么时候发生的?
- When did the explosion of fire-damp happen? 沼气爆炸事故是什么时候发生的?
- When do the new safety rules come into force? 新的安全规则何时生效?
- When did the world come into being? 世界是什么时候形成的?
- When did the empire begin to wane? 那个帝国何时开始衰落的?
- When did the universe come into being? 宇宙最初是何时形成的?
- When did the first measurement of the speed of sound take? 第一次测量声速是在什么时候?
- When did the traffic accident happen? 交通事故是什么时候发生的?
- When did the miniskirt go out of vogue? 迷你裙是何时不流行的?
- When does the new law come into operation? 这项新法律何时生效?
- When does the birthday party take place? 生日庆祝会什么时候举行?
- When does the new system become effective? 新制度何时生效?
- When does the express train leave? 特别快车什么时候开?
- When did the Irish migrate to the United States ? 这位爱尔兰人是什么时候移居美国的?
- When did the club first come into being? 俱乐部是什么时候成立的?
- When did the committee report the bill out? 委员会是什么时候把法案交回的?
- When did the Greeks immigrate to australia? 希腊人是什么时候移居到澳大利亚的?
- When does the new show hit town? 新戏什麽时候可在城里演出?
- When does the wash come back from the laundry? 送到洗衣店的衣服什麽时候取回来?
- When did the train come into use? 这火车什么时候开始使用的?