The vice president performs the duties of the president in his absence.

In Christianity, the Last Supper is considered a very important event.

He gave me an ultimatum.

He solved a large number of problems.

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

Understanding numbers is important for solving math problems.

He was bedridden with illness for several days.

We have been working on this project for ten months.

I started a new job two months ago.

We will meet again in one month.