【题目】Your parents were really anxious fro you. You _______ home without a word.
A. shouldn’t have left B. couldn’t have left
C. mustn’t have left D. needn’t have left
在线课程【答案】A
【解析】考查语气；句意为“你的父母真的很担心你，不应该一句话也没说就离家出走”。“不应该做却做了”用shouldn’t have done,故选A.