It’s difficult to live in a foreign country, ________ if you can’t understand the language there.
Jack is always _____ to wait for a long time without getting angry.
---Has Mr. Smith ________ heard about the story? ---No, he hasn’t .
---I haven’t seen my grandparents for long. I’m too busy ___ them these days. ---Why not call them instead?
---Have you decided _____? ---______.
Millie _____ for three hours. Please________.