He is viewing that situation as a serious problem.

He views that situation as a problem.

No problem, I will do that job.

That proposal is completely unthinkable.

As a practical question, how are we going to fund this project?

I am very interested in social science.

He has a very passive personality.

It is reported that North Korea has conducted another nuclear bomb test.

He is looking for a proving ground to test his new theory.

These test results are showing unexpected outcomes.