–Can I borrow your ruler?---Sorry, I left ___ at home. But you can buy ____ in the shop.A. it; one B. it; it C, one; it D. one; one
It’s necessary for you _____ exercise every day.
—Could you tell me ____? —Sorry, I don’t know.
The Greens _____ China for seven years.
Nobody knew ______.
—Do you like this mobile phone? —Of course, It is ______ designed for office ladies like me?