There was something wrong with the network, or the email earlier.A. could have been

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解决时间 2021-01-23 03:53

提问者网友：沉默菋噵
2021-01-22 15:56

There was something wrong with the network, or the email earlier.
A. could have been sent
B. might be sent
C. need have been sent
D. must be sent

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五星知识达人网友：长青诗
2021-01-22 17:01

(答案→)A. could have been sentB. might be sentC. need have been sentD. must be sent解析：A 考察虚拟语气。句义：网络出了问题，否则那封电子邮件本可以早点发出去的。Or表示的是含蓄的虚拟语气，后面的句中相当于主句，根据前面句中的一般过去时可知，or后面的句中谓语动词应该是should/could/would+ have done。故A正确。

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1楼网友：纵马山川剑自提
2021-01-22 17:59

感谢回答，我学习了

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There was something wrong with the network, or the e­mail earlier.A. could have been

There was something wrong with the network, or the email earlier.A. could have been