proszę, sprawdź mi zadanie domowe z angola

czy te zdania po angielsku są napisane poprawnie? bardzo proszę o sprawdzenie mi zadania domowego: 1. How much profit does the company make? 2. How much pollution do the turbines produce? 3. How many employees does the company have? 4. How many turbines it's there in the world? 5. How much money a wind turbine cost? 6. How many turbines does the company sell in Europe?