①即使{#blank#}1{#/blank#}       ②在做某事之前{#blank#}2{#/blank#} 

③实际上{#blank#}3{#/blank#}    ④偶然{#blank#}4{#/blank#} 

⑤发生{#blank#}5{#/blank#}      ⑥豪无疑问{#blank#}6{#/blank#}

⑦突然{#blank#}7{#/blank#}

At last, the leaves are picked {#blank#}1{#/blank#} {#blank#}2{#/blank#} and then are {#blank#}3{#/blank#} {#blank#}4{#/blank#} {#blank#}5{#/blank#}.

It seems that he has {#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#}.

The screen will tell us the arrival and {#blank#}1{#/blank#} {#blank#}2{#/blank#} of our flight.