英语翻译Do you know how long he —— —— ——?

英语翻译Do you know how long he —— —— ——? How long do you suppose it is since he left for Europe?— No — How long do you suppose it is ______ he arrived here? —How do you know that she likes singing? 求解答——How long do you suppose it is___ he arrived here?——No m — How long has he ______ ill? —How long are you staying?—I don’t know.____ —do you know what he did all day? Do you know how I can use the computer?Do you know —— —— use —How long have you lived here? ——Do you remember how he came? Do you know the —— of the English test ? How did I do? 初二英语