九unit1

2. How fast something moves or happens.
4. A book with lessons used for learning in school.
5. Using your voice so others can hear; not silently.
6. What you can do because you have learned or practiced.
7. To make something new.
9. To look again at something you have learned.
11. To join or link things together.
16. Happening during one night; or happening very suddenly or quickly.
18. To find something for the first time, or learn something new.
20. A group of words that expresses a complete thought, usually with a subject and verb.
22. Able to wait calmly or deal with problems without getting upset.
24. Talking with one or more other people.
26. Doing things; moving a lot; involved.
27. The science studying how things move, and forces like heat, light, and sound.
28. Doing something in a smart way, using good sense.
29. To become larger in number or amount; to make something bigger.

1. To learn something so well you can remember it exactly later.
3. Someone you do an activity with, like work, study, or play.
8. To say or do something again.
10. Facts, information, and understanding you gain from learning.
12. The rules about how words change and fit together in a language.
13. How you say a word or sound.
14. The science studying what things are made of and how they change.
15. Coming out of your mother and starting life.
17. Lasting for your whole life.
19. Saying your thoughts or feelings; or a look on your face showing how you feel.
20. Something kept hidden or known only to a few people.
21. The organ inside your head that controls thinking, feeling, and moving.
23. A design with shapes or colors that repeats; or the way something happens again and again.
25. A short piece of writing to help you remember; or to pay close attention to something.