求高手解决几道关于时态的题
问题描述：
求高手解决几道关于时态的题
12.You ‘ve failed to do what you_______(expect)to and I’m afraid the teacher will blame you.
13.when shall we restart our business?
Not until we_______(finish)our plan.
14.we _______(work) on this project for hours.Let’s have a rest.
答
12.had expected
13.finish
14.have worked