How long_your cousin_shanghai?

来源：学生作业帮编辑：大师作文网作业帮分类：英语作业时间：2024/11/12 13:08:00

How long___your cousin___shanghai?
A has...left B did...leave C has..been away from D has...been away
选什么?为什么选这个答案?还有been away from 与been away的不同之处?

C has..been away from
from是介词,介词后面必须加点什么.此处应该要加介词.
否则,可以直接做句子.
（How long___your cousin___?D has...been away）

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