He solved the problem using numerals.

He went to Tokyo a few days ago.

Ah! I left something behind!

My heart rate increases after exercise.

She was devastated by sadness and cried her eyes out all night.

He used every possible means to make the project successful.

He is devoting himself to his work.

I did my best for the exam.

She announced that she is pregnant.

I was watching TV at midnight.