I went to the doctor because of sinusitis.

My sinuses are blocked, and I have a headache.

My sinuses are blocked and I have a headache.

I wore a hanbok and experienced Korean culture.

He finds it difficult to understand complex sentences.

His secondary role greatly contributed to the success of the team.

We visited a fish hatchery.

Please tell me the way to solve this problem.

We are considering introducing a new voting system.

Learning a new input method is difficult.