Franklin's ability to learn from observations and experience ____ greatly to his success in public life.

The course book is a little too difficult, but we can ______ it to suit the needs of the students.

The new movie______ to be one of the biggest money-makers of all time.

I have a __________ for knowledge and also for money. 

--- Ouch! You stepped on my toe!--- I’m sorry, I didn’t __________.