14. It is difficult to open the window.
To open_______________________________________________
The window _______________________________________________
15. They are going to see a movie.
They will__________________________________
They intend___________________________________
16. I ought to go and visit Grandma after work.
I have______________________________________________
I must_____________________________________________
14. It is difficult to open the window.
To open____the window is difficult___________________________________________
The window __is difficult to be opened_____________________________________________
15. They are going to see a movie.
They will________see a movie. __________________________
They intend______to see a movie_____________________________
16. I ought to go and visit Grandma after work.
I have_________to go and visit Grandma after work_____________________________________
I must____go and visit Grandma after work. _________________________________________