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:***

1)mustn't 2)have taught 3)until 4)to 5)the 6)such a

Ответы:

1)с

2)а

3)b

4)b

5)c

5)a