Do you know where your father is?I think he______on the computer A.must chaA.must chatB.must be chattedC.could chatD.could be chatting

yo what up do i know you 补充:Do you know where... Where is home?Do you know? Do you know where is my angel? Do you know where it is ?是什么意思 Do you know where sugar is （? ） do you know where the sahara D______is Do you know where sugar is 什么? do you know where suger is p--- Do you know where the meeting Do you know where is inner mongolia? DO you know where he lives?对 还是DO you know where does he live?对 do you know where her home is还是do you know where is her home do you know where is the washroom?还是do you know where the washroom is? do you know where it is 为什么不是do you know where is it? do you know where shop is和do you know where the shop is哪个对? Do you know where West Late is?还是Do you know where is West Late?谢谢 求do you know where you're going to英文歌词