Bobcalledtotellhismotherthathecouldn’tenterthehouse,fo...

問題詳情：

 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：題幹意思是：鮑伯打電話給他的媽媽説他不能進房子，因為他把鑰匙忘在學校了。本句中的called標明動作發生在過去，而在電話之前忘記拿鑰匙，所以應用had left表示過去的過去的動作。

知識點：過去完成時及其被動式

題型：選擇題