Topology is a branch of mathematics that abstracts and generalizes the concept of space.

He was infected with hepatitis E.

He is receiving treatment for hepatitis C.

Hepatitis D is a viral disease that is transmitted through blood.

I repaired the broken vase using instant glue.

I love the class of reading Chinese classics in Japanese.

I studied Classical Chinese in university.

He has already finished writing the report, so we use the present perfect form.

We need to solve the problem in the production environment.

We play golf at the country club on weekends.