问题补充:
When deeply absorbed in work,he often was,he would forget all about eating or sleeping. (·北京,26)
A. that
B. which
C. where
D. when
答案:
A. that
B. which
C. where
D. when
解析:B
解析句意为:当他全身心地投入工作中时,他就会废寝忘食,而他经常这样(全身心地投入工作)。由引导词前面的逗号可知,这是一个非限制性定语从句,所以首先排除that。由定语从句的was可知,定语从句缺少表语,所以排除在定语从句中作状语的where和when。故选B项。