定语从句缺表语只能用关系副词 which 些错了，关系副词改成关系代词When deeply absorbed in work,__he often was,he would forget all about eating
问题描述：
定语从句缺表语只能用关系副词 which
些错了，关系副词改成关系代词
When deeply absorbed in work,__he often was,he would forget all about eating
答