Question

5. If I had seen the advertisement yesterday, I            the job. (apply)

如果昨天我看到了那个广告，我就申请那份工作了。

Answer 1

5. would have applied for考査apply和虚拟语气的用法。apply for申请。从时间状语yesterday以及句意看，虚拟条件句与过去事实相反，条件从句的谓语用过去完成时(had+过去分词) ，主句谓语用should / would / could / might + have done。