1. I have classes from past eleven to a quarter to eleven

2. You must be careful when you are crossing the road

3. Is he going to watch a football match on television tonight?

4. I and my brother oftens go swimming at the weekend  

1.from/I/past/eleven/seven/to/quarter/classes/have/a/.

==>I have a classes fronm seven to a quarter past eleven.

2.are/be/must/careful/you/crossing/road/you/when/the/.

==> You must be careful when you are crossing the road .

3.he/is/going/watch/to/a/match/teletivion/on/tonight/football/?

==>Is he going to watch a football match on teletivion tonight ?

4.often/weekends/go/I/at/swimming/and/my/brother/the/.

==> I and my brother often go swimming  at the weekends .