题目

阅读下面材料，从每题所给的A、B、C、D四个选项中选出最佳选项。 In1492, Columbus, a well-known Italian voyager, discovered the New World—theAmericas. He brought a lot of things to Europe from South America. Rubber wasone of them, but people didn't know the use of rubber at that time. In 1770,people found that the rubber could be used as erasers. Macintoshwas a worker in an eraser factory in Scotland. One day he spilled the rubberliquid over his clothes carelessly when making erasers. He was too busy toclean it and went back home wearing the dirty clothes. On the way 根据汉语，选出正确的英语单词。应该 [     ]A. should    B. must    C. still    D. feel