直接引语变间接引语的几个句子

我是英语老师,帮帮你1。He said he heard someone knocking at the door。2。He asked if/whether I could say it again。3。He said that was a good idea。4。She said she couldn't play the violin,either。5。She asked what she should do。6。The teacher told/asked us to read aloud。7。Mother asked why I wore a hat。8。The teacher said Chairman Mao died in 1976。9。They asked if we would like to join them。10。The teacher said failure is the mother of success。11。He said he found it was easy to learn math well。12。He asked if Iwas sure。13。The teacher said I'd better speak English in English class。14。He asked who knew that。好了,