”Sorry” is a word that people in Britain often say in their daily life.

    One day while I was w____ on the street, a young man ran by hurriedly, brushing（轻擦）against my handbag. He continued his way, but turned b____ and said “sorry” to me. Even in a rush, he didn't f____ to say “sorry”. One day, after I bought some bananas, the shopkeeper was passing me the change, but I wasn't ready for it and a coin dropped onto the ground. “Sorry, Madam,” he said w____ bending to pick it up. I was s____why he said “sorry” to me. Another time, I stepped on a man's f____ at the entrance to a cinema. At the same time, we b____ said “sorry”.

    Slowly, I got to know that when something unpleasant happens in daily life, the British don't c____ much about who is wrong. If someone is in trouble, a “sorry” is always n____ . Perhaps that is w____I seldom see people quarrel on the buses or streets in Britain.

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        A突然想起，一次他要从B手里拿走一个烧熟了的玉米，对她说:“你把玉米给我，过几天，我带你进城去玩。”B就把玉米给了他。还没等把玉米啃掉一半，就忘记了自己的诺言。
        A的脸一下子红了……
        A带着B来到城墙下时，A又开始发烧了。他觉得浑身发冷，四肢无力。但他坚持着拉着B的手，他要带着B沿着台阶登到城墙顶上，但B走不动了。他让B坐在了台阶上，然后脱掉了B脚上的鞋。他看到B的脚板底打了两个豆粒大的血泡。他轻轻地揉了揉她的脚说:“我背你上去。”B不肯。但A硬把B拉到了背上。他吃力地背起B，一级一级地爬上去。不一会，冷汗就大滴大滴地从他额上滚了下来。B挣扎着要下来，但A紧紧地搂着她的腿不让她下来……

某商场对顾客实行购物优惠活动，规定一次购物付款总额：

（1）如果不超过200元，则不给予优惠；

（2）如果超过200元但不超过500元，则按标价给予9折优惠；

（3）如果超过500元，其500元内的按第（2）条给予优惠，超过500元的部分给予7折优惠．

某人两次去购物，分别付款168元和423元，假设他一次性购买上述两次同样的商品，则应付款是（　　）