What was the real reason for your absence？（英译中)

The reason why we have to grow trees is that they can supply fresh air for us.（英译中)

Can you have your report ready for the press by next week？（英译中)

The thief was put into prison for one year.（英译中)

Did you come to London for the purpose of seeing your family, or for business purposes？（英译中)

The real hero of the match was our goalkeeper.（英译中)

The manager asked you to______ for your absence.A．explainB．accountC．countD．reason