When you cross the street, you can never be _______ careful.
Disney used to ___ pictures in the family garage.
Jack failed again in the final exam, but he didn’t ___ heart.
Tom was searching hard in the classroom in the ___ of finding his lost exercise book.
--Would you tell me the way ___ the school? ----I’m sorry, I don't know.
---Oh, it’s five o’clock alreay. I must be going.----______?