题目内容：

选择合适选项完成对话（英语）
(In a library)
A:What can l do for you?
B:----
A:Do you have your library card with you?
B:----
A:---,If you have time ,please wait in the library.
B:That's fine.
A:Could you please write your name on this list?
B:---
A:l will call you when a computer is free.
B:Thanks.-----
A.That's OK.
选项：A.I want to borrow a computer.
B.Yes,l do.
C.I'll sit over there until you call me.
D.l need to use a computer
E.Then what?
F.That's sounds interesting.
G.There isn't any free computer now.
my answers:A B G E C