1. 萤火虫   firefly   tick   scorpion   dragonfly   Hint Half-n-half Clue   2. 蚤   grasshopper   locust   flea   centipede   Half-n-half Clue   3. 飞行   tick   fly   moth   earthworm   Half-n-half Clue   4. 臭虫   hornet   beetle   firefly   bug   Half-n-half Clue   5. 蚂蚱   moth   cockroach, roach   ant   grasshopper   Half-n-half Clue   6. 蚯蚓   grasshopper   ant   earthworm   tick   Half-n-half Clue   7. 大黄蜂   butterfly   hornet   cockroach, roach   dragonfly   Half-n-half Clue