Поставьте артикуль если потребуется 4.he made _gross mistake.economists can make such 5.look out!_ cat is on _TV 8.On___one

4. He made a gross mistake. Economists can make such. (*возможно в предложении допущена ошибка \"economists can\'t make such). 5. Look out! The cat is on the TV!8. On the one hand, the facts he presented are true, but on the other hand, I can\'t trust them. 9. The air was fresh and cool.10. (-) oil is lighter than (-) water.