You must have missed the first train yesterday, ________ you?
A．weren’tB．didn’tC．mustn’tD．haven’t
B

試題分析：陳述句部分是含有“must表示推測(cè)”的句子，該句是對(duì)過(guò)去發(fā)生的事所進(jìn)行的推測(cè)，反意疑
問(wèn)句應(yīng)該用一般過(guò)去時(shí)。故選B項(xiàng)。該句所說(shuō)的實(shí)質(zhì)就是：You missed the first train.句意：你昨天肯定
錯(cuò)過(guò)了頭班火車(chē)，是嗎？
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