—      ,please do it now．

①How are you? {#blank#}1{#/blank#}         A. Hi, Grace. I'm Bob.

②Hello! I'm Grace. {#blank#}2{#/blank#}    B. Good evening!

③What's this in English? {#blank#}3{#/blank#}  C. No, it isn't.

④Is this boy your brother? {#blank#}4{#/blank#}   D. I'm fine, thanks.

⑤Good evening! {#blank#}5{#/blank#}        E. Yes, they are.     

⑥Are these your books? {#blank#}6{#/blank#}   F. No, he isn't.

⑦Who are they? {#blank#}7{#/blank#}           G. It's red.

⑧Is that your ring? {#blank#}8{#/blank#}      H. How do you do?

⑨How do you do? {#blank#}9{#/blank#}       I. They're my sisters.

⑩What color is it? {#blank#}10{#/blank#}      J. It's a map.

—______. You'd better be careful.