245.

W: It was exactly two years ago that we moved to this town. You started working on your degree, and I started working down at the lab.

M: It seems like only yesterday. I suppose that I am so busy that I don't even notice how time passes.

W: I'd expect the opposite. I mean, the way you've been studying, working on experiments and writting dozens of papers. It might seem more like four years than two.

M: Haven't you ever noticed how time seems to crawl when you have nothing to do? But how time flies when you are busy with what you really like to do?

W: That's true. Those days when there was not much to do at the lab didn't ever seem to end.

M: Just wait a little longer. As soon as I finish my degree, we'll open our own chemistry lab.

答案解析：

(1) 正确答案为A。根据It was exactly two years ago that we moved to this town. 我们搬来这个镇上已经整整有两年的时间了。再结合整个语境，可推知，二人应为夫妻关系，因此A项正确。

(2) 正确答案为B。根据You started working on your degree. 你开始攻读学位。可知，男子目前是名学生。因此B项正确。

(3) 正确答案为A。根据As soon as I finish my degree, we'll open our own chemistry lab.我一拿到学位，咱们就可以开一间自己的化学实验室了。可知，二人打算开一间实验室，因此A项正确。