祈使句：Don't...的用法 — 英语选择题
题目
Li Ming and Danny are on the train to Beijing. The sign on the train says: Don't run. Don't jump. Don't sing loudly. Danny wants to jump, but Li Ming stops him. Which sentence is NOT on the sign? A. Don't run. B. Don't jump. C. Don't eat. D. Don't sing loudly.