The experiment shows that proper amounts of exercise,if ______ regularly,can improve our health
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
为啥不是A?
A.being carried out
B.carrying out
C.carried out
D.to carry out
为啥不是A?
英语人气：684 ℃时间：2019-12-07 13:45:00
优质解答
这里是省略了相同的主句及be动词,整句完整的话应该是：The experiment shows that proper amounts of exercise,if the proper amouts of exercise is carried out regularly,can improve our health.或者the proper ...
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