How old are you ? 

I'm{#blank#}1{#/blank#}years old. (s  x  i)

①

{#blank#}1{#/blank#}

②

{#blank#}2{#/blank#}

③

{#blank#}3{#/blank#}

④

{#blank#}4{#/blank#}

⑴five  {#blank#}1{#/blank#}                                 A.

⑵six {#blank#}2{#/blank#}                                    B.

⑶one and three  {#blank#}3{#/blank#}                  C.

⑷fifteen {#blank#}4{#/blank#}                               D.

⑸sixteen {#blank#}5{#/blank#}                               E.