The letters for the boss ______ on his desk but he didn’t read them until three

题型：不详难度：来源：

The letters for the boss ______ on his desk but he didn’t read them until three days later.

A．was put

B．put

C．has put

D．were put

答案

D

解析

试题分析：考查被动语态。本句的主语是the letters，与动词put构成被动关系，故使用过去分词的形式。句意：给老板的信被放在桌子上，但是知道3天以后他才看见。故D正确。
点评：被动语态的考查主要要与句子的语义串联在一起，要注意语法的统一。