1) S! Be quiet! John (sleep) .
sleep
is sleeping
sleeps

2) I'm sorry I can't hear what you (say) because everybody (talk) so loudly.
say/talk
are saying/are talking
are saying/is talking

3) Look! Jenny (go) to school.
go
is going
goes

4) Listen! The birds (sing) . They always (sing) in the morning.
sing/are singing
are singing/sing
are singing/are singing

5) I (agree) with you.
am agreeing
agrees
agree

6) The bus to New York (leave) at 6.30.
leave
leaves
is leaving​