The boy. (break) his leg before his mother came
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Was broke

Объяснение:

.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)с

2)b

3)c)

4)a

5)a

6)b

7)b

8)c

9)b

10)d

11)a

12)b

13)a