This problem is very difficult.

His job is very difficult.

The earthquake was a terrible disaster.

It's tough to climb this slope.

I'm looking forward to the delicious food in the Hanshin area (between Osaka and Kobe).

I go to school by climbing the slope.

He is facing a serious situation.

After finishing a new job, he was very tired.

Climbing the mountain every morning is my daily routine.

Mr. Sakamoto is my best friend.