Many questions have been answered by John. He must have previewed the lessons last night, ____ he?
---Poor Steve! I could hardly recognize him just now! ---__________. He has changed so much!
If it is __________ for you to go out tonight, would you like to go to the cinema with me?
He made a great __________ to the success of the project.
A student in our school will be immediately sent home if he is found __________ computer games at night.
This time next week I __________ to Guangzhou to attend a meeting with my manager.