This plan is actually impossible to implement.

I think that's an impossible task.

I think that's impossible.

I first met her on the occasion of a friend's wedding.

When he returned to his country, we saw him off at the airport.

Please always bring your ID at the moment prior to the exam.

His success came to pass due to his efforts.

Please execute this program.

We made a new plan.

We are planning a picnic for next week.