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for: at at; for to; for for; to
do morning exercise do morning exercises doing morning exercise doing morning exercises .
is, exercise is, exercises are, exercise are, exercises
action practice habit custom
benefit to, benefit benefits, benefit from benefits from, benefit benefit, are benefited from
compulsory beneficial of little benefit considerate
exercises exercise exercising exercised
was doing did is doing would do
Do；exercise is Do；exercises is Doing；exercises are Doing；exercises is
for; with to; to with; to at; with
befefits to,,befenit benefits, benefit from befenits from, benefit benefits, are benefited by
was doing did is doing would do
is good at is good for are good at are good for
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