_____ to do the work, I should do it some other day.   

---Sorry, Professor Smith. I didn't finish the assignment yesterday.---Oh, you      have done it as yesterday was the deadline.

(大连市高三双基测试卷) If it were not for literature, the well-known writer J.K. Rowling _______ nowhere in life.  

Don't handle the vase as if it ________made of steel.

By the time you come back, your aunt ______ for Nanjing to attend a meeting.