"Do you know ______?I'm going to see him .""Sorry ,I don't k

"Do you know ______?I'm going to see him .""Sorry ,I don't k Do you know _________?I'm going to see him.Sorry,I don't kno ----Do you know___?I an going to see him.----Sorry ,I don't Could you tell me ____?I'm going to see him ,---Sorry ,I don Do you know where Niagara ______(fall)is?Sorry,I don't know A; Do you ______Jack B;Sorry ,I don"t know him Do you know--------last night?Sorry,I don't know Do you know ___?-Sorry I don't know. -Do you know ___?-Sorry,I don't know I don’t know where I’m going to find him.（改为同义句） I don't know whether you like ...I'm sorry 19.---______ ---Sorry,I don’t know.A.What do you think happe