－Is John coming by train?－He but he can’t. All the trains have been cancelled because of

问题补充：

－Is John coming by train?

－He , but he can’t. All the trains have been cancelled because of the snow.

A. may

B. will

C. must

D. should

答案：

A. may

B. will

C. must

(答案→)D. should

解析：考查情态动词。题意为：约翰坐火车来吗？他应该坐火车来，但他不能。因为所有的火车都因为这场雪取消了。

【标签】情态动词