Can I say,<br/><br/>(a) Could you make a cup of tea?<br/><br/>(b) Could you please make a cup of tea, please?<br/><br/> Could you please make a cup of tea?<br/><br/>(c) Could you make a cup of tea for / to me please?<br/><br/>(d) Could you please open the gate?<br/><br/>(e) Students, please hand in (all) your books.<br/><br/>(f) Ali, please pass the ruler.<br/><br/> Ali, please pass the ruler for / to me. <br/><br/> Ali, pass the ruler (to me) .