根据句意和首字母或汉语提示完成单词。

根据句意和首字母或汉语提示完成单词。
小题1:Don’t t_________ the rubbish here and there.
小题2:The hotel o_________ hot water 24 hours.
小题3:Thomas Edison was a great i_________.
小题4:The abacus was invented in the sixth _________ (世纪) by the Chinese.
小题5:We all respect Mr. Li because he is very _________(知识渊博的).