In the 1990s．a trip to Zhangjiajie cost less than 500 yuan，but now with the same amount of money you even cover the entrance fee．
A．couldn’t B shall’t C．can’t D．won’t
网友回答
解析：“Can”is used for saying that the situation：makes it possible for you to do something at a particular time．情态动词can表示“某时的条件使人可以做某事”，意思是：能；A项couldn’t是can’t的过去式。