Choose the correct answer:
1. Gold is expensive/ more expensive than silver.
2. Elephants are biger/ bigger than bears.
3. He is good/ better at English and Math.
4. Saldy is more nice/ nicer than her friend.
5. The weather is hoter/ hotter than yesterday.
6. French is a difficult/ more difficult language.
7. These apples are fresh/ fresher than these pears.
8. He is intelligenter/ more intelligent than his brother.
9. Traveling by plane is faster/ more fater than traveling by car.
10. Swimming is interestinger/ more interesting than running.