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

          B

          解析試題分析:句意:這些書不能帶出閱覽室,你們必須在這里閱讀。句子中主語books和謂語動詞take是被動關(guān)系,故用被動式,其結(jié)構(gòu)是系動詞be+動詞過去分詞,故選B。
          考點:考查被動語態(tài)。

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