It had been raining.
She has been teaching.
He began, he is still writing, he will have finished.
We have been helping, we have arranged.
What were you doing, I came.
I came, they told, he had left.
He found, he had made.
I left, the snow had already stopped, a strong wind was blowing.
Have you read, I have read, I think, it is.
What are the children doing, they are playing, I have just bought.
They have reached, are standing.
We had been walking.
That’s, I’m complaining, will talk.