5. Being an Aerobic Club member you must be patient of hardships.
参加健美操俱乐部你得能吃苦。
还能这样说：
To be a member of Aerobic Club, you should be hardy.
If you can bear the hardship, you can join in the Aerobic Club.
谚语：
If you are patient in one moment of anger, you will escape a hundred days of sorrow.
假如你生气时忍住一分钟，就不会有一百天的忧愁。
6. The sport of gymnastics is popular in our country.
体操运动在我国很流行。
还能这样说：
In our country, there are many people do the sport of gymnastics.
The sport of gymnastics is about in our country.
应用解析：
be the sport of 被……所玩弄；受……的摆布；
for sport 闹着玩地；
have good sport （打猎）满载而归；
say sth. in sport 说着玩的
7. Aerobic exercise helps to build up stamina.
有氧健身操有助于增强耐力。
还能这样说：
Doing aerobic exercises is a good way to exercise endurance.
Aerobic exercises can improve our endurance exercise.
谚语：
Build castle in the air.
空中楼阁。
8. We benefit a lot from daily exercises.
每天做操使我们受益很多。
还能这样说：
Daily exercises are helpful to us.
Doing gym is conducive to good health.
应用解析：
give sb. the benefit of one's knowledge 用自己的知识帮助某人；
reap the benefit of sth. 因某事得到好处；
sick benefit 疾病津贴；
in benefit 有资格得到救济金