点拨：{#blank#}1{#/blank#}意为"习惯于做某事"，其中 to为介词，后面接名词代词或动名词作宾语。如：Linda is used to getting up early.

辨析：{#blank#}2{#/blank#}习惯于做某事

{#blank#}3{#/blank#}过去常常做某事

{#blank#}4{#/blank#}被用于做某事

—听起来很好。

—Let's play ping-pong!  

—{#blank#}1{#/blank#} {#blank#}2{#/blank#}.

We'll {#blank#}1{#/blank#} you've got only if you've tried．

{#blank#}1{#/blank#}these two{#blank#}2{#/blank#} {#blank#}3{#/blank#}?

—Sorry, sir. Ms Wang {#blank#}1{#/blank#} (explain) a Maths problem to me.