【山东省青岛市2015年中考英语试题】You return the book now. You can keep it until next week if you like.
The dictionary mustn’t ________ from the library.
You will not succeed ______ you work harder.
--Tom,be careful not to drive to fast._________ . --Thank you for your advice.
We must do everything we can _________ our earth clearer and safer.
We all know that paper burns in _________ .