英语填写,根据对话内容填写适当的单词,把句子补充完整.
a：Excuse me.I （ ）a book.Is it here?
b：What's your book (
a：it's abook computers.
b：is（ ）name on the book?
a：yes,（ ）is.my name is Tom.
b：oh,your book is( ).
a：thank you!