Things

3. great care and attention not to take risks or get into danger
5. to press your hand or a cloth on a surface and move it backwards and forwards
6. the part of something that you use to hold it or open it
8. something that is dangerous
9. a dirty mark on something that is difficult to remove
10. an occasion when an army enters a country by force in order to take control of it
12. an event, especially one that is bad or unusual
14. an amount of a substance in the shape of a small hill or a number of objects on top of each other
15. working well and not wasting time or energy
16. control over someone or something and responsibility for them
17. someone or something that you think about all the time
20. the scientific study of genes (= parts of cells which control particular characteristics)

1. a long piece of soft cloth that you tie around an injured part of the body
2. to promise that something is true or will happen
4. planned or intended
5. to continue to keep something
7. to get something
11. to happen or exist before something else
13. the final result of an activity or process
18. a narrow piece of material used to fasten two things together or to carry something
19. a thin, pointed metal object with a small hole at one end for thread, used in sewing