燃烧下列物质，对空气污染最小的是（ ） A．聚乙烯 B．聚丙烯 C．聚氯乙烯 D

根据短文意思，用方框中所给词语的适当形式填空，使文章通顺、完整(其中有两个多余选项)。

forget, bring，mend，beside，luck，pick，same，differently, I ，every , stop，each

    Mr. Brown had an umbrella shop in a small town. People sometimes 小题1:________ him broken umbrellas, and then he took them to a big shop in London. They were 小题2:________ there.
One day Mr. Brown went to London by train. He 小题3:________ to take an umbrella with him that day. Sitting in front of him was a man with an umbrella standing 小题4:______ the seat. When the train arrived in London, Mr. Brown 小题5:________ up the umbrella as he often did during his journey by train. Just as he was getting off, he was 小题6:________  by the man. He said angrily, “That’s小题7:_______ !” Mr. Brown’s face turned red and he gave it back to the man at once.
When Mr. Brown got to the big shop, the shopkeeper had got his six umbrellas ready. After a good look at  小题8:________  of them, he said, “You’ve mended them very well.”
In the afternoon he got into the train again. The小题9:________  man was in the same seat. He looked at Mr. Brown and his six umbrellas,“You’ve had a小题10: ________ day,” he said.