I am sure it was by mistake that your closest frie...

Câu hỏi: I am sure it was by mistake that your closest friend took your English book.

A Your closest friend must have taken your English book by mistake.

B I am sure your closest friend didn’t take your English book deliberately.

C It is a mistake that your closest friend took your English book.

D It is certain your closest friend didn’t take your English book on purpose.