In the 1990sa trip to Zhangjiajie cost less than 500 yuan but now with the same amount of

问题补充：

In the 1990s．a trip to Zhangjiajie cost less than 500 yuan，but now with the same amount of money youeven cover the entrance fee．

A．couldn’t B shall’t C．can’t D．won’t

答案：

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。