问题描述:
Either the twins or their father ( )our school before ,so they can come here by themselves tomorrow.(visit)
请问应该填has visited 还是have visited 为什么啊,请给我解答一下!谢谢.
请问应该填has visited 还是have visited 为什么啊,请给我解答一下!谢谢.
问题解答:
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