國立教育廣播電臺

英語教室：開口說英語- which, who, whose, when, where, whether, why, Which is yours? Who are you? Who can hel[ you? Whose is the bicycle? Whose bicycle is this? When will you come back? When he comes tomorrow, we`ll go to out together. Where do you come from? We don`t know whether he will come or not. Why did you come back so late?