All the tasks __________ ahead of time 怎么选择
公共英语
已帮助 人
All the tasks __________ ahead of time, they decided to go on holiday for a week.
A) been fulfilled B) having been fulfilled C) were fulfilled D) had been fulfilled
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Bhavingbeenfilled
逗号后面是一个完整的句子,又没有and连接,所以,前面的句子,不应该是一个完整的句子,其他选项放进去,都是一个完整的句子,也就是说,had,were都可以做谓语动词。
D的话,没有have提示,怎么能用been呢,been是过去分词,和have一起,才能表示完成时的,不能单独用
