All the tasks _______ahead of time ,they decided to go on holiday for a week.
All the tasks _______ahead of time ,they decided to go on holiday for a week.
A had been filled B having been filled
C were filled D been filled
why
A had been filled B having been filled
C were filled D been filled
why
英语人气:986 ℃时间:2020-05-05 14:51:29
优质解答
B having been filled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,...
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