Question

These books mustn’t ________ out of the reading room. You have to read them here.
A. take                    B. be taken            C. be taking

Answer 1

B

解析试题分析：句意：这些书不能带出阅览室，你们必须在这里阅读。句子中主语books和谓语动词take是被动关系，故用被动式，其结构是系动词be+动词过去分词，故选B。
考点：考查被动语态。