A、Workers. B、Cleaners. C、Students. D、Waiters. C推断题。有两处可以推断出两位说话者的身份，“I got to earn money for school”和“Me too，tuition sureis high

M: Hi, Sherrill.
W: Hello, Fill, how are you?
M: I’ m fine, where are you headed?
W: Oh, I’m on my way home from work.
M: I didn’ t know you have a job.
W: Yeah. I work part-time at the supermarket.
M: What do you do there?
W: I work in the produce section, trimming and wrapping fresh fruit and vegetables. I also stock shelves. Sometimes when it really gets busy, I work at the check-out counter. Have you got a job, Fill?
M: Yeah, I do yard work for people. You know, cutting grass, raking leave, falling weeds, things like that.
W: I ’d like doing that. It must be nice to work outdoors.
M: Sometimes it is, except when it rains, snows or gets too hot or too cold.
W: I guess every job has its drawbacks. There are times when I get pretty tired of carrying things around at my job. But a job is a job. Got to earn money for school.
M: Me too, tuition sure is high, isn’ t it? Well, I’ d better get going I have to plant some trees for my neighbours this afternoon.
W: Well, don’ t work too hard, holding down a job, going to class, studying, sometimes can become too much for one person. Take it easy.
M: You too, it was great seeing you, Sherrill.
Questions 12 to 15 are based on the conversation you have just heard.
12. Where does Sherrill work?
13. What doesn’t Sherrill do during her working time?
14. According to Fill, what is the disadvantage of his job?
15. According to the conversation, who are they?