找出划线部分发音不同的选项。
⑴{#blank#}1{#/blank#} A .ruler B .bus C. cut D. cup
⑵{#blank#}2{#/blank#} A .short B .worker C. for D. morning
⑶{#blank#}3{#/blank#} A .cow B .now C. show D. how
⑷{#blank#}4{#/blank#} A .take B .make C. bag D. plane
⑸{#blank#}5{#/blank#} A .duck B. but C. use D. mum