Кто тут английский знает хорошо?)

Правильно ли составлены вопросы?
What knowledge and skills does the Air Cargo business require?
What does this course provide?
The long term customer loyalty is achieved when company has sufficient key personnel, isn’t it?
What knowledge should key personal have to ensure that the customer needs are met?
What skills should handling agents have to perform professionally in specialised sector of the airline industry?

Большая просьба, кто не знает - не пишите