Old people must ________.
A. be spoken politely B. speak polite
C. speak to polite D. be spoken to politely
D
解析 句意:和老人说话时一定要有礼貌。考查被动语态。根据句意可知,必须礼貌地跟老人说话,这是一句被动句,主语Old people是谓语动作speak的承受者,故句子应用被动语态,B、C选项可排除。speak是不及物动词,表达“和某人说话”应用speak to sb.,在被动语态中介词to不能省略,故选D。
Liu Xiang ________by his coach to train regularly.
A.advised B.advises C.was advised D.be advised