Who will take charge of the class when I am away?——.A. It’s up to youB. You are welcomeC.

问题补充：

Who will take charge of the class when I am away?

——.

A. It’s up to you

B. You are welcome

C. No problem

D. Thank you

答案：

(答案→)A. It’s up to you

B. You are welcome

C. No problem

D. Thank you

解析：本题考查交际用语。It’s up to you由你决定；You are welcome不客气；No problem没问题；Thank you谢谢；根据句意：--我离开了将由谁负责班级？--由你决定。