No matter how hard he worked, ____.（ ）
- A.he could not do any better
- B.and he could not do any better
- C.so he could not do any better
- D.but he could not do any better
正确答案及解析
正确答案
A
解析
本题考查让步状语从句。No matter how hard he worked是让步状语从句，与其后的主句之间不需要连接词。
