问题详情:
Bob called to tell his mother that he couldn’t enter the house, for he ______ his key at school.
A. had left B. would leave C. was leaving D. has left
【回答】
*:A
解析:题干意思是:鲍伯打电话给他的妈妈说他不能进房子,因为他把钥匙忘在学校了。本句中的called标明动作发生在过去,而在电话之前忘记拿钥匙,所以应用had left表示过去的过去的动作。
知识点:过去完成时及其被动式
题型:选择题