----Can you finish ___ these books before 10 o’clock?----Yes, I can .
The car is _____ expensive _____ he can’t buy it.
—Have you ever read an e-book ?—_______.
Her sister Ellen enjoys ________ the pop music and so does she.
My mother will make some food for us if we _______ a party at home.
Please remember _______ the computers down when you leave the office.