first 在这样一句话里我不懂它是什么意思?what do you say first?

What do you do and say when you meet someone for the first t What do you do and say when you meet a colleague first thing You must first say“please”! pass first在游泳里是什么意思 what time do you begin you first class? What time do you have the first lesson what do you want to konw me first? What will you do first in the morning ? what do you think about the first candidate? What should you do _when___greeting someone for the first ti 英语回答：What time do you begin your first class? what did they do first?