填空题 Without the friction (摩擦力) between their feet and the ground, people will in no way be able to walk.
【正确答案】
【答案解析】will应改为would[解析] 根据句意可知,主句显然是对现在事实的虚拟假设,因此谓语应用“would+动词原形”结构,故正确答案为would。句意:没有脚与地面的摩擦力,人们将无法走路。