1)
Allow to synchronize → Allow you to synchronize

1.1)
your your → your
all your repository → all your repositories
Switch the Pull → Switch to the Pull
Describe a bit the pull → Describe the pull

2)
Is is → It is
send pull request → send a pull request

2.1) four remote → your remote
We were told how to push to master in 45), via "Push to origin", but not how to push to another branch so I don’t know how to complete this part of the exercise.