12)
　　A: If you're free, how about lunch?
　　B: When did you have in mind?
　　A: I was thinking about Thursday?
　　B: That will be fine with me.
　　A：有空的话一起吃顿中饭如何？
　　B：你想什么时候呢？
　　A：我看星期四怎样？
　　B：没问题。

　　13)
　　A: I'm calling to see if you would like to have lunch tomorrow.
　　B: I'm sorry, but this week isn't very convenient for me.
　　A: Perhaps we van make it later.
　　B: That would be better.
　　A：我打电话给你，是想知道明天一起吃顿中饭怎样？
　　B：对不起，这个星期我都不方便。
　　A：那么，也许改天吧。
　　B：好啊。

　　14)
　　A: I'm calling to confirm our luncheon appointment.
　　B: It's tomorrow at twelve o'clock, right?
　　A: Yes, that's right.
　　B: I'll be there.
　　A：我打电话来，是想确定一下我们约好吃饭的事。
　　B：是明天12点吧？
　　A：是的，没错。
　　B：我会去的。