—When do we need to pay the balance?
—________ September 30.
A．In B．By C．During D．Within
________ the crisis of economy getting more and more serious, the government is searching for ways to improve people's life.(2013·扬州调研)
A．As B．With C．When D．If
Nowadays some hospitals refer to patients ________ name, not case number.(2010·江西)
A．of B．as C．by D．with
He invited me to a dance after the show ________ Christmas Eve.(2009·陕西)
A．at B．on C．in D．by
Four Chinese models were ________ the 14 people awarded prizes on Friday at the World Supermodel Competition.(2009·上海)
A．among B．between C．along D．beside
(2013·重庆，23)It's not easy to change habits，________ with awareness and self－control，it is possible.
A．for B．or C．but D．so
