问题描述:
[-B53] The experiment shows that proper amounts of exercise,if ______ regularly,can improve our
health.
A.being carried out
B.carrying out
C.carried out
D.to carry out
翻译并分析
health.
A.being carried out
B.carrying out
C.carried out
D.to carry out
翻译并分析
问题解答:
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