选择正确的应答语。

⑴Where are you?                                                         A. I'm talking to my friend.

⑵Excuse me. Where is the supermarket, please?        B. I'm behind the tree.

⑶Thank you.                                                                C. Turn left.

⑷Where is the train?                                                    D. It's at the station.

⑸What are you doing?                                                E. You are welcome.