Помогите!!!Нужно проверить правильно ли написано
A hairdresser is a person who cuts and style people.
He usually works in the hairdressers
A surgeon is a person who perform operations on the body
He usually works in the hospital
a receptionist is a person who greet visitors
He usually works in office or hotel
Who devised the tevelevision camera?
When Philo Tayler devise the television camera?
What is the main element ...?