Do you remember the building ____ flew a red flag all the year round ?
over which
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Lastnighthesawtwodark_____enterthebuilding,andthentherewastheexplosion.
Mary keeps talking about the party.She had a very good time,______she?
Gene: Shall I open this window?
Jodie: ______
He paid the boy $10 for washing ten windows,most of ____ hadn't been cleaned for at least a year.