$1$. I'm the yougest person in my family.
$2$. My brother is busier than I am.
$3$. Mary is taller than her sister.
$4$. London is smaller than Mexico City.
$5$. Is your kitchen bigger than my sister's?
$6$. Which season is the coldest in your country?
$7$. Her hair is shorter than my hair?
$8$. Our teacher is the best person I know.
$@ThanhTruc2008$