Complete the sentenes. Use can ,can't must ,mustn't.
1)Can you hear anything ? - no, I .............
2) it's dangerous. Matt ........... be careful.
3) they ............ walk there in ten minutes.It isn't far.
4) It's late. She .......go to bed.
5) I ..........move my arm. I think it's broken .
6) ..............we stay at the Youth Hostel?-Yes,you can.
7) You..........talk.Be quite!
8) Ben wants to go skateboarding but he .........find his skateboard.