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1.Onlywhenclassbeganthathehadlefthisbookathome(realize)直到开始上课时他才意识到他把书落到家里了。

题目详情

1. Only when class began        that he had left his book at home (realize)

直到开始上课时他才意识到他把书落到家里了。

▼优质解答
答案和解析

1. did he realize