----Can he work out the maths problem? ----I think _____ hard for him to work it out.
Turn off the water while you ____ your teeth or washing your face.
I’m not surprised at the ending of the movie because I ________ the story.
It ________ me an hour ________ to school every day last term.
She _______ for eight years and now she has a son.
The number of visitors _______ smaller and smaller because of the worse environment here.