2.My brothers working harder than he----------.A .used to .B .was used to C .is used to D.is used to do 说明理由

2.My brothers working harder than he----------.A .used to .B .was used to C .is used to D.is used to do 说明理由
2.My brothers working harder than he----------.
A .used to .B .was used to C .is used to D.is used to do 说明理由

2.My brothers working harder than he----------.A .used to .B .was used to C .is used to D.is used to do 说明理由
选A.
used to是过去(...怎么样)
be used to doing是被用来干什么
eg.The knife is used to cut paper
(刀是用来切割纸的)
be used to something是习惯于什么
eg.Jim is used to the cold weather here.(吉姆现在习惯了这里寒冷的天气了)
本题是我的兄弟比以前认真了