【山东省青岛市2015年中考英语试题】—Listen! There someone at the door. —It must be your sister.
I don’t know _____ tomorrow. Can you tell me?
My father didn’t go to bed ______ he washed his car last night.
We can’t do two things _____.
Jim’s shirt is made _____ silk , and it’s made ______ china.
No smoking, please. It’s ____ the rules.