Is this a multiple choice or true or false
It is a gerund. A noun derived from a verb. Ex. the word "singing" We enjoyed the choirs singing.
Answer:
A person can identify the amount of sleep he or she requires by waking up naturally.
The amount of sleep needed varies from person to person
Explanation:
In the paragraph, the lines "Everyone needs different amounts of sleep; the number of hours varies from person to person" and "Let yourself wake up naturally without an alarm, and then record the number of hours it took for you to wake up on your own. Once you have identified the amount of sleep you need, schedule your bedtime according to your required amount of sleep." indicate that these two are right.
Hope this helps!
Answer:
1a. People were able to cook by burning wood and coal
b.people were not able to work at night because they do not have electric lamps
c. oil, gas or coal may harm the earth
d. we can use less energy
2.
1. should
2.would
3. should
4.should
5. would
3.
1. b
2. b
3. c
4. b