It is important for A to do

I would be delighted to help you with your project.

Children are apt to make mistakes.

I am content doing my own thing.

How are you doing? Are you ok?

Please do not disturb me while I'm working.

I dare not tell you the truth.

The president's sudden resignation gave her the unprecedented opportunity to get to do things she had never been allowed to before.

He is doing time in prison.

I used to play soccer every weekend.