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do morning exercise do morning exercises doing morning exercise doing morning exercises .
Taking exercise Take exercise doing exercises Taking exercises
is, exercise is, exercises are, exercise are, exercises
either; or neither; nor not only; but also between; and
Do exercise is Doing exercise is Do exercises are Doing exercises are
Nor I do . So do I . Me ,neither . Neither am I.
B.C.D.四个选项中选出可以填入空白处的最佳选项。 Doing exercise for _________ hour every day is good for our health. A. / a the an
skips includes means counts
Do；exercise is Do；exercises is Doing；exercises are Doing；exercises is
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