"There are a lot of complicated questions to be answered."

Therefore, I do not think you will find a simple answer to this rather complicated question.

But I started asking complicated questions, and he didn't know the answers.

It is a complicated question which cannot be discussed here.

But the cases can take time to resolve because of all the complicated questions.

How far it's going to go is a complicated question.

From such a potentially complicated question comes a relatively simple answer.

We understand that it is not always easy to answer sometimes complicated questions in one minute.

These days, who works for whom is one of the most complicated questions in the emerging economy.