Please check my answers thank you.

1. Identify which change is needed, if any, to make this sentence correct:
Some people prefer stationery bikes to treadmills.

A. no change
B. stationary X

2. Identify which change is needed, if any, to make this sentence correct:
Many of the fashions of the roaring twenties have come back into vogue.

A. No change X
B. Roaring twenties
C. roaring Twenties
D. Roaring Twenties

3. Identify which change is needed, if any, to make this sentence correct:
Studies show that children whose parents read to them do better in school.

A. who is
B. who's
C. who'se
D.no change X

4. Identify which change is needed, if any, to make this sentence correct:
Many soft drinks are caffienated.

A. no change
B. caffienated X

5. Identify which change is needed, if any, to make this sentence correct:
The Sahara Desert is the world's largest subtropical desert.

A. no change X
B. Dessert; dessert

6. Identify which change is needed, if any, to make this sentence correct:
Oddly, the chief-of-staffs positions were given to people with little experience.

A. chiefs-of-staff
B. chief-of-staff X
C. chief-of-staff's
D. no change

I agree with you on all except #4 — unless B is supposed to be spelled ‘caffeinated.’

I disagree with #2. Periods or eras of time should be capitalized, so it should be the Roaring Twenties.

Ian is correct.

# number 6 answer should be Chiefs-of-staff.

1. The correct answer is B. The change needed is to replace "stationery" with "stationary." The word "stationery" refers to writing materials, while "stationary" means not moving. In this context, the correct word is "stationary," as it describes the type of bike.

To arrive at this answer, check the meaning and context of the two words given as options. Determine which word aligns with the intended meaning of the sentence.

2. The correct answer is D. The change needed is to capitalize both words "roaring" and "twenties." When referring to the specific time period known as the Roaring Twenties, both words should be capitalized.

To arrive at this answer, consider the rules of capitalization and the specific naming conventions for historical periods.

3. The correct answer is D. No change is needed. The word "whose" is correct in this context and should not be replaced by "who is" (option A), "who's" (option B), or "who'se" (option C).

To arrive at this answer, understand the difference between "whose" (a possessive pronoun) and "who's" (a contraction of "who is"). In this sentence, "whose" correctly shows possession.

4. The correct answer is A. No change is needed. The word "caffeinated" is spelled correctly. Option B, "caffienated," contains a misspelling.

To arrive at this answer, compare the word provided in the sentence to option B. Identify the correct spelling through knowledge of common English vocabulary and spelling rules.

5. The correct answer is A. No change is needed. The sentence is correct as it is. The word "desert" refers to a barren land, while "dessert" refers to a sweet course served after a meal. In this context, the word "desert" is the correct choice.

To arrive at this answer, consider the meaning of the sentence and the difference in spelling between "desert" and "dessert."

6. The correct answer is A. The change needed is to use "chiefs-of-staff" instead of "chief-of-staffs." "Chiefs-of-staff" is the correct plural form of "chief-of-staff."

To arrive at this answer, understand the rules for forming plurals of compound nouns. In this case, the noun "chief-of-staff" needs to be pluralized correctly.