1)You__walk on the grass in the park
a)needn't
b)must
c)mustn't
2)Children__by special instructors how to swim
a)have taught
b)teach
c) are taught
3)You can't go__you have done your homework
a)while
b)untill
c)after
4)I depend__public transport to get to work
a) on
b)to
c)in
5) I went to__hospital to visit him yesterday
a)a
b)-
c)the
6)They were__friendly people that we felt very welcome
a)such a
b)so
c) such
спасибо большое:***