l want to know how long_______A.has he been backB.has he come backC.he has been backD.he has come b
为什么
l want to know how long-------A.has he been backB.has he com
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解决时间 2021-08-12 23:58
- 提问者网友：伴风望海
- 2021-08-12 13:22
最佳答案
- 五星知识达人网友：神也偏爱
- 2021-08-12 14:26
选C,因为后面的句子要用陈述语态.back是一个瞬时动词,完成时里面要用has been back
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