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exercise; exercise exercises; exercises exercises; exercise exercise; exercises
do morning exercise do morning exercises doing morning exercise doing morning exercises .
is doing do are doing does
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Taking exercise Take exercise doing exercises Taking exercises
is, exercise is, exercises are, exercise are, exercises
Do exercise is Doing exercise is Do exercises are Doing exercises are
compulsory beneficial of little benefit considerate
kept busy doing keep busy with doing were kept busy doing have been kept busy with
benefits; benefit from benefits to; benefit benefits from; benefit benefits; be benfited from
kept busy doing keep on doing have kept busy doing have been kept busy doing
benefits; benefit from benefits to; benefit benefits from; benfit benefits; be benfited from
Do；exercise is Do；exercises is Doing；exercises are Doing；exercises is
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