do you know that he is right?和do you know if he is right?哪个正确?为什么?

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 know ___(he)? Do you parents know that? Idiots,know that you do not know do you know that l love you who is that man over there do you know namea heb he'sc his Do you know the year in ____ he was born?A.which B.that 为什么 Do you know for sure that he have stolen before. 这里的for sure 是什么意思呢 Do you know who is he? Do you know _______（he） What does he do?Do you know?(改为宾语从句)Do you know ----- he ----- 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 Who is that man over there?Do you know ________ name?A.his B.he’s C.he I heard that he had fallen ill for three days.Do you know if he is better now?单句改错