Someone ______ at the door. Can you open it?

题型：单选题题类：常考题难易度：普通

湖北省2017届九年级英语专题练习：现在进行时和过去进行时

A、knocks B、knocked C、is knocking D、was knocking

举一反三

—He _______ a newspaper in the bedroom now.

—Yes,{#blank#}3{#/blank#} {#blank#}4{#/blank#}.

What is{#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#}?

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