You must first say“please”!请问句中first是做副词吗?还是形容词?

You must first say“please”!请问句中first是做副词吗?还是形容词? first,ask the way,when,say,want,what,you,must,you,to连词成句 You must first be finished before lunch. you must first可以这么说么 to konw happiness,you must first experience If any one wants to say something in class,you _____put up your hands first A.must B.may C.should I为什么一定要大写?不是在句子开头的第一个字幕才大写吗?First,i must say that they.这个i能不能用小写?再看First,you must say that they.为什么是you 而不是 You?这个科学!这不公平! go ahead ,you ,take the overpass,just,and,at the traffic lights 连词成句,下如同2)first,ask the way,when ,say,want,what,you,must,you,to,3)about,ask,do,the,distance,how,you, 用英语解释句子You must say sorry to Betty. We well be together forever OK you must say ' ok ' I know you must say :I am okfa翻译 I must say ‘Please’to you(改为同义句) I dare not say i love you,but i must say i love you! Though the first letter is____u in the word useful,we must say ____useful book you must finish your homework first.否定句 You must ( ) your homework first括号内填空 you must enter your real first and last But you must wash your hands first.这个句子对吗?