The experiment shows that proper amounts of exercise, if __ regularly, can improve our health. A. be...
2023-01-24 03:18:12 105次 2010年高考英语试题分类汇编名词性从句 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. carried out D.
to carry out
本题链接：
