问题标题：
whenI____there,Ifoundthateverything____readyAreached;wasBgotto;wereCarrivedat;wasDarrived;were回答并说明理由.谢谢
问题描述：
whenI____there,Ifoundthateverything____ready
Areached;was
Bgotto;were
Carrivedat;was
Darrived;were
回答并说明理由.谢谢
陈金忠回答：
CD都不可能,因为arrive后面要加at/in.
又因为Ifoundthateverything____ready,里面是everything,单数,要用was
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