China Business Daily reported the 60% discounts on some Beijing-shanghai flights have now slipped back to 20% _______ one day in advance.
He stood against the wall with his right hand _____.
The missing boys were last seen _____ near the river.
He gave me the phone number in order ______ contact him when we are in need of help.
You know that widely reading helps ______ your knowledge so I can’t help _____ the housework every day.
The factory is five kilometers ______ from his house.