She helped us finish all the work.Then she went back home.
问题描述：
She helped us finish all the work.Then she went back home.
改为同义句She ( ) ( )back home when she helped us finish all the work.,括号内填什么.
答
have gone
这句话是应该用现在完成时,因为she helped us finish all the work是一般过去时,往后错一位,就是现在完成时.因为现在叙述这句话就是一般现在时.