It was announced that only when the terrible disease was under control _____ to return to their homes.A.the residents would decideB.would the residents decideC.would the residents be decidedD.the residents would be decided
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B解析试题分析：考查部分倒装句：only+副词，介词短语，状语从句放在句首时，主句谓语用部分倒装，将be动词，助动词，情态动词放在主语前面，这句话only后面接时间状语从句，位于从句的句首，后面的主句要倒装。句意：人们宣布只有当可怕的疾病被控制住，居民才决定回家。the residents 和decide是主动关系，选B。考点：考查only的倒装句
点评：部分倒装中考查较多的有：(1) 含有否定意义的词never，seldom，little. hardly，not，scarcely，nowhere，by no means(决不)等置于句首时。(2)以only修饰作为状语的副词、介词短语或从句，且放在句首时。注意：only 修饰状语从句放在句首时，状语从句不需要倒装，只能倒装主句部分。