Your parents _______you many things in their lifetime, but you may not realize that until they are gone.
---When did you leave the office yesterday afternoon? ---____ I finished my work.
---Mr. Green , do you think I can get an “A” in the final exam if I start working hard now? --Of course. ______.
---Do you think the question is too hard _____? ---I don’t think so. He can answer it easily.
Jack is always _____ to wait for a long time without getting angry.
---Has Mr. Smith ________ heard about the story? ---No, he hasn’t .