A: while
B: because
C: before
举一反三
- Remember to close the window and the door_______ you leave the classroom. A: before B: after C: as soon as D: until
- —Did you close the windows—Yes, I remember （） them before leaving home. A: to close B: closing C: closed
- Remember to close the windows befor you___(leave)
- Please ________ the light before you leave the room.
- Before you leave the office, please (connect) ______ your computer from the Internet.
内容
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Please don’t forget to put your home address on the back of the envelope before you mail the letter. Please remember your home address on the back of the envelope before you mail the letter.
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Please leave ______ 7:00, then you'll be able to get there ______ time. A: till, in B: until, on C: before, on
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- Some of the magazines are missing. Did you close the door before leaving?- Yes, I remember ___ it, for it remains ___. A: to close; locked B: closing; locked C: closing; locking D: close; being locked
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Please remember the radio before leaving.
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What is polite while smoking? A: Check for no smoking signs before you light up. B: Ask those sitting close to you if they mind before you light up. C: If you are a non-smoker, don’t react violently to someone who lights up near you. D: All of the three.