Lf you are busy,you ___come to attend the meeting.a/mustn't b/ needn't c/ can't d/ have to不明白此句的语气应该用哪个词来修饰、

“lf you are the lf you are the lf you... are you busy you are busy are you busy? are you still busy now? What are you busy ______? what are you busy yeatertay? You are busy! 什么意思 Are you very busy recently lf you are turtle.did you feel nervouns?why lf you jump, lf you have lf you well is lf you are going to america,bring your own food lf you are sick see the doctor 什么意思急! lf you are finished then press submit under mcnu!