He has been skating for five hours.(用since改写句子) He has been

Alison has been skating for five hours. ① he has been working for five hours for five hours用它提问、 He has been skating since.的同义句He has been skating_____ _____ Next is Sam ,and he has been skating for four hours He has been for five years. Alison has been skating since five hours ago 对划线部分提问 It has been five years since he has left for beijing这句话对不对啊 he has been here since five weeks ago. It has been three hours since he left his office.把has been 换 How long has he been skating? The,has,skating,marathon,been,for,going,hours,five,now.(连词成句 The skating marathon has been going for five hours now,and s