I was really astonished by his sudden proposal.

We should go forward.

He voluntarily took on the job.

I was taken aback by his sudden proposal.

Lo and behold, he passed the exam.

We will contact you as soon as we confirm the progress of the construction.

The development of his language skills is progressing at an astonishing speed.

This area has been developing rapidly in recent years.

His ability is recognized.

He is my best friend.