为了促销，元旦期间，甲、乙两家商店都采取了优惠措施．甲店推出八折后再打八折优惠；乙店则一次性六折优惠．若购买相同价格的商品，______更优惠．（填“甲”、“乙”或“一样”）

My dad __________ Singapore for a meeting. He ________ there twice.

A．has gone to, has been to

B．has been to, has gone to

C．has gone to, has been

D．has been to, has gone