The workers’ strike ______ evolved so quickly since the winter of 1965.A、has not

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问题 The workers’ strike ______ evolved so quickly since the winter of 1965.

选项 A、has not been
B、had to be
C、haven’ t been
D、will not be

答案 A

解析语法题。句中的since，意为“自……以来”，since+时间点，主句应用现在完成时态。又因句子的主语为单数，排除C选项，故选A。

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