I don't know he is _____the football team.( ) A.by B .at C.on D .of

I _ don't know what it is i don't know _ _ _(多少次) HE HAS TRIED. i don't think he is a good student,_ I don't know what is he doing谢谢了, I don't know ( )(him).Who is ( )(he)? don't where he I know is连词成句 I don't know where he is意思 I don't know whether he is w___ to come I don't know his job.he is a doctor I don't know his job.he is a doctor I don’t know where is he from.或 I don’t know where he is from.哪个对 i don't know where is he和i don't know who he is哪句话形式对了 I don't know when he _(come)back.when he _(come)back,I will call you he is a doctor.what is he?i don't know what he is?/i don't know what is he? 1.There is a new washing machine in the room.we know.(合并为一句)we know _ _ a new washing machine in the room2.Will he come back?i don't know.(合并为一句)I don't know _ _ _ come back. How old is he? I don't know （变为同义句）I don't know ____ ____ I don't know what he needs I don't know how I can get there. 改为简单句I don't know _ _ _ there.