—OK. 20 yuan, please.

—{#blank#}3{#/blank#}, please.  

⑴What did you do yesterday?{#blank#}1{#/blank#}            A. Over the Internet.

⑵What does your uncle do?{#blank#}2{#/blank#}               B. Four tons.

⑶How heavy is the elephant?{#blank#}3{#/blank#}             C. I climbed mountains.

⑷How tall is he?{#blank#}4{#/blank#}                                  D. Interesting.

⑸What do you think of the book?{#blank#}5{#/blank#}      E. He's a postman.

⑹How do you know that?{#blank#}6{#/blank#}                   F. 170 cm.