【題目】If the dog hadn't woken us, we wouldn't have noticed the fire and it __________ to the house next door.

A. could spread

B. should have spread

C. would spread

D. might have spread

【答案】D

【解析】句意：如果狗沒(méi)有叫醒我們，我們也就不會(huì)注意到火，它可能會(huì)蔓延到隔壁的房子。表示對(duì)過(guò)去可能性的推測(cè)，用might have spread。

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