Где вставить артикль?! 1. Can you pay me back ... money I lent you? 2. I know he is ... Doctor . 3. ... Ben Nevis is

Тема: Где вставить артикль?! 1. Can you pay me back the money I lent you? 2. I know he is a Doctor . 3.  The Ben Nevis is the highest mountain in the United Kingdom. 4. Some people still believe the world is flat. 5. In some  countries the murder is punishable by death.