_______ for your laziness，you could have finished the assignment by now.
A、HaditnotbeenA
句意：要不是你懒惰，到现在你就能完成任务了。本题是一个省略if的虚拟条件句，主句用couldhavedone表示与过去事实相反，条件从句应用haddone形式，had要提前构成倒装。
The central theatre has a seating ________ of more than 3, 000 people.
It_______methreeyearstodrawthebeautifulhorses.
They are eager _______ abroad.
When you're_____ a crisis, it often helps to talk to someone.
It is no use arguing _______ the plan because it has been rejected.
