May/Can/Am/Shall I come in?

May/Can/Am/Shall I come in? 《》i have a glass of beer?no,i'm afraid you A;can't can't B;could won't C;may daren't D;shall may 求一道高中英语单选May I use your mobile phone to send a message?May I use your mobile phone to send a message?Well,if you ,be quick.I am playing games with it.A may B can C shall D must Will you go shopping with me? Yes,I __ A. will　 B. shall　 C. can　 D. may Shall we go shopping now?Sorry,I can not.I ---- my shirts.A.wash B.washed C.am washing 英语选择题（shall,will,can&may）— Who would like to help me with the heavy box?— I __________ .A.Shall B.will C.can D.may我选的是C I am learning English .I shall see you tomorrow .I can understand you .I am learning English .I shall see you tomorrow .I can understand you .I must write a letter .I may come next week .I did a lot of work yesterday .I played football yesterday .① I -take the job.On one -stop me A .will/may B.shall/may C.will/shall D.should will 18.I___YOU LATER,BUT I'M NOT SURE YET.A:SEE B:CAN SEE C:AM SEEINGD:MAY SEE may,can,must,need,shall辨析1.-There's somebody at the door.Who ＿＿＿it be?Is it the postman -No,it ＿＿＿be him.It's just seven o'clock.It's too earlyA.may;can't B.will;won't C.may mustn't D.must;may not2.-Shall I tell John about it -No ,you Let’s put the matter to the vote and not waste our time arguing about it,A.shall we B.can we C.may I D.will you I wish to shake hands with you,__I?A.may B.can’t C.shall D.would答案是A为什么?为什么其他的不能选? I hear John singing downstairs.----It___be John ,for he left for tokyo yesterday.A.may not B.can not C.must not D.shall not 选B是吗? ---Could you join in the game with us?---I am af---Could you join in the game with us?---I am afraid I can't.I_____practice playing the violinA :shall.B:can.C:should.D:have to ―Shall I buy more food ―No,we have prepared much.That ＿be quite enough can.may .ought toA can B may C might D ought to选哪一个，why -I can not stop playing computer games.-For your healthy,my boy,i am afraid you--.A can B may C must D have to -I can not give up smoking ,doctor?-For your health,i am afraid you（ ） A,may B.can C.have to Miss Smith ,can I go home after I finish my homework?No ,you _____stay here until I come back.A.shall B.need C.can D.may.A AB的区别?