英语好的帮我做三道单选题啊,

题目

英语好的帮我做三道单选题啊,
上课要讲这三道题,大家帮我看看,
1,If there was Gone with the Wind in the bookstore,I ____it yesterday.
A would have bought B bought C had D may have
2,We regret_____them that the construction materials are out of stock.
A to inform B have informed C informing D informed
3,Since time is limited,there is no possibility putting off_______.
A making the plan B to make the plan C deciding the plan D plan
要写出分析的原因,要细,把这句的翻译也帮我写下啊,

答案

1.A 虚拟语气,只能用would have done ,表示本想做而没做.
翻译：昨天书店里要是有那本《飘》,我肯定就买了.
2.A regret to do,表示遗憾将要做某事.regret doing是遗憾做过了某事.
翻译：我们很遗憾地告诉他们,建材已经没有库存了.B D语法不对.
3.C put off doing 推迟做某事.
翻译：因为时间有限,所以没有可能推迟决定方案了.根据句意应该是“决定方案”.
保证准确,祝好!