(2013·陕西西安名校第五次模拟)Our bad living habits will destroy the earth.Only by changing________we live can we save the earth.
A．that B．what
C．how D．where
(2014·长沙四校联考)It was only when I reread his poems recently________I began to appreciate their beauty.
A．until B．that
C．then D．so
(2014·湖南十二校联考)I got an email from my old friend last Sunday.Until then，we________in touch for nearly 3 years.
A．didn’t get B．haven’t got
C．hadn’t got D．don’t get
(2014·兰州名校阶段检测)Many people believe that hunger is only a problem in the developing countries.________，it is a problem all over the world.
A．For one thing B．In addition
C．As well D．On the contrary
Born into a family with three brothers，David was________to value the sense of sharing.
A．brought up B．turned down
C．looked after D．held back
(2014·东北三校模拟)We had just covered half the journey________the engine failed and we could do nothing but wait for help.
A．before B．since
C．when D．until
