It's rainy(下雨) today. My brother and I are in the l{#blank#}1{#/blank#}. We are reading b{#blank#}2{#/blank#}. He is very cold. So he c{#blank#}3{#/blank#} the windows. My sister is playing w{#blank#}4{#/blank#} are her friends.

① {#blank#}1{#/blank#}     A．lunch    B．class    C．dinner

② {#blank#}2{#/blank#}    A．one    B．for    C．three

③ {#blank#}3{#/blank#}    A．fast    B．second    C．one

④ {#blank#}4{#/blank#}     A．time    B．in    C．for

—Maybe you should see a dentist.