If you home without a word, your parents wouldn't be so worried now.
A. didn't leave
B. couldn't have left
C. hadn't left
D. shouldn't leave
网友回答
A. didn't leave
B. couldn't have left
(答案→)C. hadn't left
D. shouldn't leave
解析：C 考察虚拟语气。句义：如果不是你不说有句话就离开，你父母现在也就不会如此着急了。本句是一个混合虚拟语气，if从句是对过去事情的假设，所以从句谓语动词使用had done的学生，而逐渐是对现在事情的假设，故主句的谓语使用would do的形式。