题目内容：

My sister is a ___girl and she studies ___at school.Ahard:hard-working Bhard working
My sister is a ___girl and she studies ___at school.
Ahard:hard-working Bhard working;hardly Chard-working;hard Dhard;word-hard

优质解答

C
hadr-working 勤奋的
study hard认真学习

追问：

why?在吗？

追答：

单词的意思就是这样的啊 应该是hard-working - - 打错了我