选择句子补全对话。
Sarah:
.
Sarah:
.
Peter:Thanks.Do you have a computer room?
Sarah:
.It’s on the first floor.
Peter:Oh,so many computers.
.
Sarah:Yes,it is. We have many books.
Peter:
?
Sarah:Oh,It’s 4 o’clock.It’s time to go home.
Peter:
.
Sarah:Yes,it is.I have an umbrella.Go with me.
Peter:Thanks.