Употребите подчёркнутые существительные в форме единственного числа. 1. these dresses are dirty. 2. his friends don't like the mice. 3. my brothers study'english. 4. the firemen can help them.

.1.-open the window.

-but i have opened the window.

2.i have seen the film.

3.he has opened the door.

4.they have cleaned the room.

1 east

2 west

3 occasions

4 connected

5 associated

6 religious

7 marks

8 widely

9 unite

10 fireworks

11 follow

12 include

13 although