It is necessary that an efficient worker _______ his work on time.

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问题 It is necessary that an efficient worker _______ his work on time.

选项 A、accomplishes
B、can accomplish
C、accomplish
D、has accomplished

答案C

解析 主语从句中使用的虚拟语气可用来表示要求,建议,提议,命令,意愿等。形式为:It is +要求引起虚拟的形容词或过去分词+主语从句。这种主语从句中的谓语,美国人要求用动词原型,而英国人要求用should + 动词。因此此处形容词 necessary要求引起虚拟,选择答案C。
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