—Are they from England?—_______.
I’m very worried because I have made ________________ progress in my math.
You never know how much difficulty we had _________________ the problem. Luckily, we try to solve it with Mrs Wu’s help.
--- 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 _______________________.