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2-12.MrBrownwasgladwhenthewalletwasatlastreturnedbacktohishand.backto错了改为为什么~

题目详情
2-12.Mr Brown was glad when the wallet was at last returned back to his hand.
back to 错了 改为 为什么~
▼优质解答
答案和解析
back去掉,
与return意思重复了