You never know how much difficulty we had _________________ the problem. Luckily, we try to solve it with Mrs Wu’s help.
A. working out B. work out
C. worked out D. to work out
--- How hard-working the teachers are!
--- I agree with you. The teachers are always strict __________us.
A. at B. on C. in D. with
The film has ___________ for half an hour. Shall we give it up?
A. last B. be on C. been on D. been lasted
The song “trouble is friend” is worth _______________________.
A. to listen B. listening
C. listening to D. to listen to
— Why do you look so sleepy in class, John?
— Sorry, sir. I __________________ to watch a live Music Festival last night.
A. kept up B. made up
C. stayed up D. put up
---Whom would you like to choose as your assistant, Jack or David?
---If I have to choose, David would be ____________________ choice.
A. a good B. a better
C. the better D. the best
