Only when home that he had left his bag in the taxi he had taken． [ ] A． he returned; did he realize B． did he return; did he realize C． he returned; he realized D． did he return; he realized 题目和参考答案——青夏教育精英家教网—

题目内容

Only when _________ home _________ that he had left his bag in the taxi he had taken．

[　　]

A．

he returned; did he realize

B．

did he return; did he realize

C．

he returned; he realized

D．

did he return; he realized

答案：A

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