--- Could you tell me      ?   --- Certainly. In 20 minutes.

A．when will the train to Beijing leave

B．when the train to Beijing would leave

C．when the train to Beijing left

D．when the train to Beijing will leave

科目 英语   题型 单选题   难度 较易

知识点： 主从复合句 宾语从句 选词完成句子