The experiment shows that proper amounts of exercise, if ___ regularly, can improve our health. A. b...
2022-12-30 23:03:27 66次 2013届辽宁省分校高二下学期期末考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
The experiment shows that proper amounts of exercise, if
___ regularly, can improve our health.
A. being carried out
B. carrying out C. to carry out D. carried out
本题链接：
