谢谢你，我的英语不好，希望以后能够多多指正我的错误哦

Because at that time just in the meeting 

What's stopping you? Is there some reason you think eating snacks at 5pm is bad?

it's 5p.m.

通常a.m.或p.m.都是用数字的，如果要用英文字就写成：it's five in the evening傍晚五点