Можете написать эти предложения в трех формах 1) if the teenager ... (collect) his thoughts, he ... (win) the competition.

 1) If the teenager collects his thoughts, he will win the competition. If the teenager collected his thoughts, he would win the competition. If the teenager had collected his thoughts, he would have won the competition. 2) If you learn German, you will stay out of trouble. If you learnt German, you would stay out of trouble. If you had learnt German, you would have stayed out of trouble. 3) If they take care of their pets, the poor puppy and kitten won\'t get into trouble. If they took care of their pets, the poor puppy and kitten wouldn\'t get into trouble. If they had taken care of their pets, the poor puppy and kitten wouldn\'t have got into trouble. 4) If we don\'t rely on him, we won\'t be late. If we didn\'t rely on him, we wouldn\'t be late. If we hadn\'t relied on him, we wouldn\'t have been late. 5) If the girl lays the table, her aunt will not be angry with her. If the girl laid the table, her aunt would not be angry with her. If the girl had laid the table, her aunt would not have been angry with her.