After her son’s death, the old lady __________ sit at the window, deep in thought.

—Sorry, sir. I can’t answer this question. ---Well, you are supposed______ this part of history.

I commanded that he      at once.

— Joe, don’t forget to bring your laptop with you tomorrow, OK?  — Oh, thank you. I wouldn’t bring it if you _____ me.

(2013·齐鲁名校一模)To make the most of your time, live every moment as if it________ your last.