理解单词意思，选出与它们同类的单词，将正确选项填在横线上。
A. pen B. ear C. watched D. ninth E. in F. tall
⑴nose mouth {#blank#}1{#/blank#}
⑵pencil ruler {#blank#}2{#/blank#}
⑶long small {#blank#}3{#/blank#}
⑷on behind {#blank#}4{#/blank#}
⑸fifth sixth {#blank#}5{#/blank#}
⑹talked stayed {#blank#}6{#/blank#}
