—Some countries are taking action to occupy the islands of the South China Sea.—Yes but I

问题补充：

—Some countries are taking action to occupy the islands of the South China Sea.

—Yes, but I think they be punished sooner or later.

A. could

B. can

C. may

D. shall

答案：

A. could

B. can

C. may

(答案→)D. shall

解析：本题考查情态动词。句意：----一些国家正采取措施侵占中国南海的岛屿。----是的，但我认为他们迟早会受到惩罚。此处所填之词表示说话人的警告，故用shall。shall用于第二、第三人称，表示说话人给的命令、警告、允诺或威胁等。