如图是某同学在厨房里看到的食用纯碱(主要成分是Na₂CO₃)包装袋信息，他带了一包食用纯碱到学校实验室。

​

用所给单词的适当形式填空。

    ”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.