Hello everyone ,
I would be grateful if anyone could help me in the following :
Which is more correct in changing the following sentence into the impersonal passive form :
People think that we only use a small percentage of our brain power .
It can be done as follows :
1. It is thought that we only use a small percentage of our brain power .
2. Only a small amount percentage of brain power is thought to be used . OR Only a small amount percentage of brain is thought to use OR what ?????????//
Another sentence :
Experts have proved that exercise is good for concentration .
Which possibility is correct :
1. It has been proved that exercise is good for concentration . OR it is proved that exercise is good for concentration .
THANKS ALL