---Excuse me. Where is your teachers’ office?--- sir.---Thanks a lot.A. This way pleaseB

问题补充：

---Excuse me. Where is your teachers’ office?

---, sir.

---Thanks a lot.

A. This way, please

B. That’s all right

C. You’re welcome

D. Sorry, I don’t know

答案：

(答案→)A. This way, please

B. That’s all right

C. You’re welcome

D. Sorry, I don’t know

解析：句意：---请问，你们老师的办公室在哪里？---先生，请这边走。---谢谢。This way, please：请这边走，That’s all right：没关系， You’re welcome：不用谢，Sorry, I don’t know：对不起，我不知道。结合语境可知应选A。