It's tough to ride a bicycle up this steep slope.

Due to the impact of the new coronavirus, the number of patients has risen to 3,000.

Climbing the mountain every morning is my daily routine.

This problem is very difficult.

His job is very difficult.

The earthquake was a terrible disaster.

He is touring the regions where he learns dialects by bicycle.

I commute to school by bicycle every day.

He is facing a serious situation.

After finishing a new job, he was very tired.