Question

—I phoned you at 9 this morning but got no answer.
—I am sorry. I _____ the bell. I _____ in the garden.

A．didn’t have heard, must have been	B．didn’t have heard, must be
C．didn’t hear, must have been	D．didn’t hear, must be

Answer 1

C

试题分析：情景对话 句意为：--今天早上九点我给打了个电话不过没人答复
--很抱歉。没有听见电话声。我那时一定在花园吧
一般过去时：简单陈述一件过去发生的事，强调事件本身。Must have done 是must对过去事件的肯定推测，这个事件肯定发生了，所以用完成时。结合语境可知，选C.
点评：此题主要考察考生对时态和must表推测的掌握程度和熟练情况，作答此类型题，应从时态本身代表的含义出发，平时复习应以理解为主，记忆为辅。