I couldn't get in touch with her for a week.

This subimago is at a stage before becoming a fully mature adult.

He solved a large number of problems.

Understanding numbers is important for solving math problems.

He was bedridden with illness for several days.

I can't solve this problem because there are too many numbers.

I know this is sudden, but could you arrange a time for me to meet with the president?

I know this is sudden, but could you arrange a time for me to meet the president?

The expansion of this problem should be limited.

In this classical literature, the technique of kakarimusubi is skillfully used.