A、During economics class. B、Before economics. C、In about an hour. D、The next day. D“why don’t you…”是建议别人做某事的一种常用句型。M建议W明天办公时间来找他

M:Hello.
W:Hello. This is Dr. Gray’s office. We’re calling to remind you of your 4 : 15 appointment for your annual checkup tomorrow.
M:Oh! Thanks. It’s a good thing you called. I thought it was 4 : 15 today.
Q:What does the man mean?

W:Excuse me, Professor Davidson, but I was hoping to talk to you about my class project for economics.
M: I have a class in a few minutes. Why don’t you come and see me during office hours tomorrow?
Q: When will the woman discuss her project with Professor Davidson?