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Knock Knocking Knocked To knock
knock to knock knocking knocked
a; / the; the a; a the; a
the telephone rang Anna heard the telephone ring someone knocked at the door there was a knock at the door
do knock is knocking knock knocking
Knocked To knock Knocking Knock
knock on knocking on knocks on to knock on
to knock knocking knocked knock
Knocking Knocked Knock To knock
at; after on; behind at; below on; under
is; knocking is; knock are; knocking are; knock
knock knocking knocks to knock
had I gone；someone knocked at I had gone；did someone knock at had I gone；did someone knock at did I go；someone knocked at
knocked to knock knock knocking
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