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单项选择用cross和across填空1.Everyoneshouts"killit"whenamouseisseentorunthestree.2.TheyhadtheriverbywhenIarrived.麻烦请说明理由

题目详情
单项选择
用cross和across填空
1.Everyone shouts "kill it" when a mouse is seen to run_____ the stree.
2.They had ______ the river by when I arrived.
麻烦请说明理由
▼优质解答
答案和解析
1.run across 因为每次我都看到它们两个搭配在一起.
2.crossed.cross the river 渡河 固定搭配,过去完成时 crossed.