Complete the sentences.Use the verbs in the box with can,can't,could or couldn't.
cycle      drink     listen    play   ride   start up      understand  
We can't play squash,but we love watching it.
1)I ________milk when I was a child,but I hate it now.
2)We_______to school until we were eleven,but now we _____ our bikes every day.
3)He didn't do his homework because he_____the question.
4)My mum_____our computer.She isn't at all practical!
5)My dad turned off the radio because I_____to music while I'm studying.