从右栏中找出与左栏句子相对应的答语，并将其字母标号填在题前括号内。Good morning, Sam.{#blank#}1{#/blank#} A. Thank you.
Where's the book?{#blank#}2{#/blank#} B. Yes, it is.
Here's your book.{#blank#}3{#/blank#} C. It's the ABC song.
Is this a bag?{#blank#}4{#/blank#} D. Good morning.
What's your favourite song?{#blank#}5{#/blank#} E. It's on the desk.
