—Tom often drives carelessly.—Tell him he ________ answer for it if he goes on behaving like that. 

(2013·皖南八校一模)I felt surprised that anyone of his intelligence ________ such an easy test.

—Please don’t tell anybody．—I     . I promise．

---Must we leave the classroom now?---No, you _____. You _____ leave after the bell rings.

You_____ all those calculations! We have a computer to do that sort of thing.