4. select / choose (chose / chosen)
3. fly (flew / flown) (v.) ---- flight (n.)
2. explore (vt.) --- explorer (n.)
1. invent (vt.) / inventor (n.) / invention(s) (n.)
discover (vt.) ---- discovery (n.)
5. lie (v.)位于 / 平躺 lay / lain
9B Unit 4
4. consist of… / be made up…
3. fill (v.) / be filled with… ---- full (adj.) /be full of….
2. furniture (u.n.) ---- a piece of furniture
1. unless
5. order (n.) / (v.)
9B Unit 3
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