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到上学期末为止,苏珊已经学了1000个英语单词.(by)
人气:346 ℃ 时间:2020-05-06 04:17:20
解答
By the end of this team,Susan has learned 1000 English words.
By是现在完成时的标志,用现在完成时(have/has+done).
^-^
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