Due to this tax reform, the cumulative imposition has increased.

The government is considering cumulatively imposing a new tax on existing taxes.

I am currently studying the third section of mathematics.

The population is increasing rapidly.

We believe that a reform of the education system is necessary.

We believe that we need to reform the education system.

The taxation system in Japan is complex and difficult to understand.

We decided to start a new project by joining our companies.

I forgot my homework.

I accidentally left the window open.