$1$. Nam asked me that why i did morning exercie
`->` Câu tường thuật WH-: S + asked + O + (that) + WH- + S + V(lùi thì)
$2$. They said that thay had to clean the house to avoild the Sars Cov 2 regurlary
`->` Câu tường thuật: S + said + S + V(lùi thì)
$3$. The Minister asked me that if i stayed at home
`->` Câu tường thuật Y/N questions: S + asked + O + if/whether + S + V(lùi thì)
$4$. Nam said that he would wear mark when he went out
`->` Câu tường thuật: S + said + S + V(lùi thì)
$5$. They said that if the covid 19 pandemic had stopped the students from going to school for a long time
`->` Câu tường thuật: S + said + S + V(lùi thì)
