15.
W: Your parents aren't coming back soon, are they?
M: Yeah well, they e-mailed me the other day and they seem to be staying in Poland, at least for the time being. I just don't know when they will change their idea.
Q: What does the man mean?
正确答案：C
解析：男士说父母发电子邮件说他们要待在波兰。故答案是C。选项都是关于His parents的描述，而且都含有时间状语，猜测题目与他父母去留某地的时间有关。强干扰项D中的“settle down”属于过度推测，从对话原文中并不能判断出“父母”是否要在波兰“定居”。

16.
W: You told me you liked your job. Why do you look so upset?
M: Whenever we try to change the work routine, the workers have so many ifs and buts that we never manage to change anything.
Q: What does the man mean?
正确答案：B
解析：女士问男士为何不高兴，男士说不管怎样尝试去改变工作程序，工人们总是有许多借口去反对，结果什么都改不了。故答案是B。选项都是workers发出的动作，猜测题目与工人们的行为有关。ifs and buts指的是不愿意做某事的借口或反对的理由。