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2 the most difficult exam

3 they were the cheapest I could find

4 you can do better

I will try harder.

5 for farther information

6 it's much more expensive than the gray one.

7 speak louder

2 Burgers are as tasty as tacos

3 Skating is more difficult than cycling

4 Rock climbing is as dangerous as surfing.

5 Football is more popular than basketball.

6 Sailing is more relaxing than golf.

2 the darker it got, the more frightened I became.

3 the harder we worked, the more successful we became.

4 the more noisy the boys got, the more angrier their father became.