составить по 2 предложения: с:
It is possible (may)
it is impossible(can can"t)
it is necessary(must)
it is important(should)
например:
We can prevent war.I agree with you.
May i come in?
you may take my pen
i can`t catch up with her
i can play the piano
i must do it well
you must not go there
you should work more seriously
you should not read about it