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In the past decade email (become) ______ one of the most popular means of commun
In the past decade email (become) ______ one of the most popular means of commun
游客
2023-09-23
21
管理
问题
In the past decade email (become) ______ one of the most popular means of communication.
选项
答案
has become
解析
本题考查动词的现在完成时。本题开头的时间状语in the past decade(在过去的十年里)表示一个持续性的时间,即表示从十年前持续至今,对应的动词时态应该是现在完成时。空格前的主语email为单数名词,因此,应将become改写为第三人称单数的现在完成时has become。
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