给下列句子排序。
({#blank#}1{#/blank#}) He's learning English now.
({#blank#}2{#/blank#}) She learnt to cook.
({#blank#}3{#/blank#}) He studied very hard.
({#blank#}4{#/blank#}) Peter is teaching his father.
({#blank#}5{#/blank#}) Five years ago, he walked to school.