Question

Bob called to tell his mother that he couldn’t enter the house, for he ________ his key at scho..

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

Answer 1

A

该句句意为Bob打电话给他的妈妈，告诉她说他进不了房门，因为他把他的钥匙忘在学校了。根据句意可知，把钥匙忘在学校（leave）的动作发生在打电话（called）之前，called 是过去时，那么忘记钥匙在学校leave就是发生在过去的过去，即过去完成时，故选择A项。 【考点定位】考察时态。