He ran fast nobody could catch him.
You should try to _____ the problems by yourself. You are not a child any longer.
— Do you have any difficulty _____ English?— Yes, but I try to make myself _____.
—Whose book is this? — It _______ our teacher’s. You see, his name is on it.
— I didn’t see you at the meeting yesterday. Why?— I _____ for an important telephone call at that moment.
—Don’t forget to come to our school meeting tomorrow.— I won’t. I _____ just now.