280.
M: Would you please tell me why you want to work in our kindergarden? You know kids are sometimes so tiresome.
W: I love children. I can sing to them and teach them how to dance.
M: Then have you worked in a kindergarden before?
W: No, but I used to take care of children during summer and winter holidays.
M: I see. By the way, do you want to work part-time or full-time?
W: I'd prefer part-time.
M: When can you work?
W: I'm free every afternoon. So I can work about 20 hours a week.
M: OK, Jean, you're hired. You can work here from 2 p.m. to 6 p.m., four days a week, except Friday, Saturday and Sunday.

答案解析：
(1) 正确答案为B。根据男子问Would you please tell me why you want to work in our kindergarden?你能告诉我你为什么想在我们幼儿园工作吗？可知，女子来应征老师，因此B项正确。
(2) 正确答案为C。根据You can work here from 2 p.m. to 6 p.m.你下午两点至六点可以在这里工作。可知，女子一天工作四个小时，因此C项正确。