do you know that/if--do you know ( ) we will arrive this afternoon?--I am afraid we will be late.a)that b)if3kyou

Do you know ----------he will be back.that或if, do you know that he is right?和do you know if he is right?哪个正确?为什么? Do you parents know that? If I were you,I wouldn't do that,because you should know about me If you know what will you do Idiots,know that you do not know i do not know that if you are right 这句话 that 和 if 可以一起做连词吗? do you know that/if--do you know ( ) we will arrive this afternoon?--I am afraid we will be late.a)that b)if3kyou do you know that l love you 用英文回答If you are invited to a western dinner,how do you know that the dinner starts? Do you know that man ( ) white glasses? Do you know that( 国家) girl. Do you know that I'm Do you know who that American is 英语翻译1.if you do not work hard ,_______________________.2.if you climb that tall tree ,______________________.3.if you know the answer ,_______________________.4.if you are ill ,________________________________.5.if you play in the classroom,_ 句子不理解do you know if you have enough money? Do you know—— Mary will come here tomorrow?A.that B.weather C.what D.if Do you know ____they live in the same city?A what B if C where D that