1. It was very difficult to travel to the town 5 years ago. Now people can drive a car or take a bus to the town. (easily)

People can travel to the town easilier than they could 5 years ago.

2. I do yoga three time a week, but my sister does it almost every day. (frequently)

My sister does yoga more frequently than I do.

3. The Australian athlete jumped 8.78m. The American athlete jumped 8.59m. (far)

The Australian athlete jumped further than the American athlete did.
 

4. Red River is 1.149km long. Mekong river is 4.350km long. (long)

Mekong River is longer than Red River.

5. A horse can run 80km/h while a dog can run 50km/h. (fast)

A horse can run faster than a dog can.