问题
选择题
Have you ever stopped _____ how our lie _____ if the world ran out of ol?
A．to think, would change
B．thinking, would change
C．to think, will change
D．thinking, should change
答案
答案：A
考查虚拟语气。Stop to do停下来做；if引导的与现在事实相反的虚拟语气，故主句用would + v原形。句意：你曾经停下来思考过，如果世界用完了汽油，我们的生活将有什么变化？