--- ________ your sister a student?---No, she ________.
--- How hard-working the teachers are!--- I agree with you. The teachers are always strict __________us.
The film has ___________ for half an hour. Shall we give it up?
The song “trouble is friend” is worth _______________________.
— Why do you look so sleepy in class, John?— Sorry, sir. I __________________ to watch a live Music Festival last night.
---Whom would you like to choose as your assistant, Jack or David?---If I have to choose, David would be ____________________ choice.