English people eat lots of salads because they think salad makes them __________. (health)

1. English people eat lots of salads because they think salad makes them __________. (health)
2. We spent years learning about the complex ________ structure of the region. (geology)
3. The snow-capped summit, 2,642 meters high, offers ________ views. (astound)
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4. Oxford attracts large numbers of ________ . (sightsee)