12.
1) does your brother
like
2) are you doing
are watching
3) did you go
was
went
4) did Bob work
worked
5) is she doing
is playing
plays
6) did you buy
bought
buy
7) is he writing
is
is writing
8) did you finish
finished
13.
1) is having
2) read
3) did you watch
4) is playing
5) did you stay
didn't
went
6) went
