I think _______ is really difficult for us to work out this kind of math problem.
What action should they _______ such a thing happening again?
_______ you are busy now, let’s go next time, OK?
This piano is too big. Can you make _______ for it?
What is the correct structure of the sentence “Driving brings the young man happiness”?
---You know what, Mike. There are already five people in the car. They still want me to go with them.---Oh. It _______ a comfortable journey.