选出下列每组单词中与其他两项不同类的一项。①{#blank#}1{#/blank#}A.pick B.swim C.summer
②{#blank#}2{#/blank#}A.season B.summer C.autumn
③{#blank#}3{#/blank#}A.spring B.sometimes C.usually
④{#blank#}4{#/blank#}A.often B.always C.spots
⑤{#blank#}5{#/blank#}A.sunny B.cake C.rainy