I visited the Great Wall{#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} {#blank#}4{#/blank#}last month．

{#blank#}1{#/blank#} {#blank#}2{#/blank#}my brother is talented in music.

It's very difficult for the boy to {#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} something for a long time.

Can you come to {#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#}our new library?

I{#blank#}1{#/blank#} {#blank#}2{#/blank#}  really{#blank#}3{#/blank#} {#blank#}4{#/blank#} {#blank#}5{#/blank#}pollution.