It will be difficult ________ a robot_________ same things as a person,A. of, to do B. for, to do C. for, doing
—______do you have an art festival in your school?— Once a year.
Betty _____ eats junk food, so you see, she is pretty healthy.
Don’t worry about him, He is _____ to drive a car.
The story was very _____, so we all felt________.
I bought _____ for my parents, but I bought _____ for my brother.