1) we need to concentrate on the lessons.
Who needs to concentrate on the lessons?
What do we have to do on the lessons?
Where do we need to concentrate?
When do we need to concentrate?
How shoul we act on the lessons?
2)He arranged the English club himself?
Who arranged the English club himself?
What did he arrange ?
What did he do with English club?
How did he arrange English club?
Why did he arrange English club?