选择正确的应答语。
⑴Where are you?{#blank#}1{#/blank#} A. I'm talking to my friend.
⑵Excuse me. Where is the supermarket, please?{#blank#}2{#/blank#} B. I'm behind the tree.
⑶Thank you.{#blank#}3{#/blank#} C. Turn left.
⑷Where is the train? {#blank#}4{#/blank#} D. It's at the station.
⑸What are you doing?{#blank#}5{#/blank#} E. You are welcome.
