№1. Напишите возвратные местоимения в нужной форме. We will do everything .
Are you always sure of yourself?
The knife was sharp, and he cut .
He believes in .
She introduced .
№2. Исправьте ошибки в предложениях.
My parents taught himself to swim.
Oliver repaired the arm-chair herself.
He hurt ourselves when himself fell down the stairs.
Nancy and Frank taught French himself.
Her mum cuts themselves.

His advice is quite useful. It is worth following.
Why are your clothes so dirty?
Who is to blame that this information was not sent in time?
Though the news was rather sad, he pulled himself together and continued working.
Your son is making good progress.  But I don't feel like praising him yet.
Where is the money? I've put it into your bag.
The information sent by you turned out to be quite reliable. It helped us a lot in our work.
I am looking forward to hearing/having news from you.  It is always very interesting. 

One of the most dangerous activities is presented by jumping from various high objects. As usual, these objects are not higher than 600 meters. It can be a house, a bridge or a rock. Jumpers use special parachutes for this kind of sport. Base jumping, as it is sometimes called, is much more dangerous than traditional parachute sport, where sportsmen jump from 4 thousand meters from a plane. You have less time to concentrate and make necessary movements.

i actually want to be a jumper do some tricks and be cool

i want it because it'S good for my health, and also it's dangerous but i like that