The experiment shows that proper amounts of exercise, if  __  regularly, can improve our health.
#97485
A
being carried out
B
carrying out
C
carried out
D
to carry out
推荐题目
 _____ on a clear day, far from the city crowds, the mountains gave him a sense of peace.
#89892
A
If walking
B
While walking
C
Walking
D
When he was walking
The young lady was careful _________. 
#97921
A
not repeating her mistake
B
not repeated her mistake
C
to not repeat her mistake
D
never to repeat her mistake
Stop _______ me to hurry up. I can only go so fast.
#98424
A
to tell
B
telling
C
to have told
D
having told