5. B. at
The preposition "at" is used to indicate a location, specifically the fireplace.
6. D. lit
This is the past tense of the verb "light," which means to illuminate.
7. B. oil lamps
Oil lamps were commonly used for lighting before the advent of electricity.
8. C. record
This word means to write down or document something.
9. D. playing games
This activity is a common pastime for children, especially outdoors.
10. A. should
This modal verb expresses obligation or advice.
11. A. because
This conjunction introduces the reason for using oil lamps.
12. B. too
This adverb indicates that the tools were excessively outdated.
13. B. walk
Walking is a common mode of transportation, especially in the past.
14. A. go through
This phrase means to examine or inspect something carefully.
15. B. People should use separate bins for different types of waste.
The sign clearly indicates that different types of waste should be separated.
16. C. Touching animals is prohibited.
The sign explicitly states that visitors should not touch the animals.