48.He works too carelessly. That is ____ we can’t understandA. what which B. what C. what that D. which
热心网友
B他工作太粗心了,这是我们所不理解的what =all that
热心网友
B
热心网友
答案是B以how , when what , where 等疑问词引导的句可以在句子中作主语，宾语，表语等成分， 如：what you say is right(主语)i take back what i said just now (宾语)the queston is where to to ?(表语)i do not know how to get to his house.
热心网友
Ｂ
热心网友
what
热心网友
B