At that moment I had no choice but _____________ the policeman for help.
| A．to ask | B．asking | C．ask | D．asked |
I’m very worried because I have made ________________ progress in my math.
| A．few | B．a few | C．little | D．a little |
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 |