---I am afraid I can’t return the book to you before Friday.
--- .
Don’t be afraid B. Be careful C. Not at all D. Take your time
---I am afraid I can’t return the book to you before Friday.
--- .
Don’t be afraid B. Be careful C. Not at all D. Take your time
D
解析:本题考查交际用语。根据上下文可以看出“没有关系,不要着急;慢慢来”