Do you know what's the c___thing? I think it is the belt

Do you know ,what's - what’s this( )English?Do you know? What's love?Do you know? I don't know what to do,it's because you,so Do you know what ____ is it?____.I t's Australia. what do you know Do you know what Do you know what? what do you mean you don't know do you know what's the matter?还是do you know what the matter is?为什么?do you know what's wrong with that?what 是什么成分？主语？ i don't know shane,what do you think what's his job?Do you know?合并成一句 What do you know about Mary's _____(illness)? What _____(造成) yesterday's accident ,do you know? 合并宾语从句:Do you know?What's the matter? Do you know what's on tonight by any chance? do you know what's worth fighting for?确切的. I do'nt know what's you mean中文是什么意思