1. The economic growth of the western world is often realized
at the expense of the third world.
2. There was a layer of dust on the windowpane , so that he could not see the sky.
3. In the Netherlands south- western winds are severe / prevalent / nasty.
4. The victims of the shipwreck were clung / clinging to anything that could float.
5. In Qatar a lot of foreign workers are being exploited / threatened by their employers.