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ответ: 1-a) we  should not  burn  garbage.  it.            2- c) plants  growing  in the sea            3-c) greenpeace  protect  the oceans,  rivers, seas  and lakes            4-c)  we can  help the animals  if  we do not  cut wood            5-a)  we can help  the fish  if we do not  pollute the  oceans, rivers  and lakes

1) there isn't a bookshelf at the window.2) there aren't two girls in the room.3) there isn't an armchair by the table.4) there aren't two beds in the bedroom.