给下列句子选择正确的答语
⑴Can you sing well?{#blank#}1{#/blank#} A. Yes, he is.
⑵Is this your bag?{#blank#}2{#/blank#} B. A book.
⑶What's in the box?{#blank#}3{#/blank#} C. No, it isn't.
⑷What can you see?{#blank#}4{#/blank#} D. Yes, I can.
⑸Is he your brother?{#blank#}5{#/blank#} E. I can see a pig and a sheep.