1. Justin went straight to his room. I didn't see him, but I heard him put ______ his 
   favorite CD.
2. In the corner, there is a garbage can ______ which are pieces of garbage and waste 
   paper.
3. The aliens took me ______ the UFO so that they could do research on me.
4. Yeti and Bigfoot are similar ______ a creature known as the Wild Man of Shennongjia.
5. I studied a lot yesterday and stayed ______ very late. I didn't feel very well this 
   morning.
6. Things change so quickly! I'm now in hospital recovering ______ liver failure.
7. ______, the trip will take six days. That means I'll have to sit on a camel for almost
   a week-how uncomfortable!
8. I look back on my time in the UK ______ satisfaction, and I really hope to go back and
   study in Manchester again.
9. Many teenagers feel lonely, as if no one understands them and the changes they are
   going ______.
10. Diets are useless in the long term, yet ______ 20% of teenagers say they have tried
    going on a diet and skipping meals to control their weight.