①围绕……旋转 {#blank#}1{#/blank#}    

②数百万的 {#blank#}2{#/blank#} 

③太阳系 {#blank#}3{#/blank#}     

④在宇宙中 {#blank#}4{#/blank#} 

⑤到目前为止 {#blank#}5{#/blank#}  

 ⑥几次 {#blank#}6{#/blank#} 

⑦足够远 {#blank#}7{#/blank#} 

Why don't you{#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#}these activities?

They {#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} due to their broken legs.

My best friend helps to {#blank#}1{#/blank#} {#blank#}2{#/blank#} the best in me. 

I have{#blank#}1{#/blank#}, but {#blank#}2{#/blank#}Mike.