A、She is in the third grade. B、She is in the second grade. C、She is in the kindergarten. D、She is still at home. DWhich grade is

M: Why, Mary Smith. I haven’t seen you for ages. How have you been?
W: John, John Brown. It has been a long time, hasn’t it? It must be at least a year.
M: No, we talked at the Johnson’s Christmas party last December. Don’t you remember?
W: That’s right. Well, how are you? Still working for the Jones and French Company?
M: No, I changed jobs about 3 months ago. I’m with the National Bank now. How about you?
W: I’m still teaching at the university. But I switched from the German department to the Spanish department.
M: Don’t tell me you speak Spanish, too.
W: Sure. I grew up in Spain, you know. German was what I studied in college, but my Spanish is much better.
M: All I’ve ever managed to learn is a little Italian. I can get a pizza in Rome, but not much more.
W: Well, how is your family? Are the children all in school now?
M: No, Billy is still at home. Tom is in the third grade and Jane’s in the second. Billy could have gone to kindergarten, but we didn’t want him to start school too early. So we’re keeping him out until next year.
W: Our two children haven’t started school yet either. But my daughter Sue will go in the fall, too. Oh, my bus band just came in. I want to go ask him something. I’ll talk to you again later, John.
M: It was nice seeing you again, Mary.