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
英語(yǔ)人氣：417 ℃時(shí)間：2020-05-05 14:51:29
優(yōu)質(zhì)解答
B having been filled逗號(hào)后面是一個(gè)完整的句子,又沒有and連接,所以,前面的句子,不應(yīng)該是一個(gè)完整的句子,其他選項(xiàng)放進(jìn)去,都是一個(gè)完整的句子,也就是說(shuō),had,were都可以做謂語(yǔ)動(dòng)詞.D的話,沒有have提示,怎么能用been呢,...
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