Here are the correct answers for each question:

**Question 1.** By doing so, the researchers reduced errors and made the two records **compatible**.
- **A. compatibly (Incorrect)** — "Compatibly" is an adverb and does not fit the sentence structure.
- **B. reduced errors (Incorrect)** — This phrase is correct, but it’s not what needs adjustment.
- **C. By doing so (Incorrect)** — This phrase is also not incorrect.
- **D. two records (Correct)** — “Compatible” should be used instead of “compatibly.”

**Correct Answer:** A. compatibly

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**Question 2.** The committee is **composed** of representatives from both the public and private sectors.
- **A. representatives (Incorrect)** — This part is fine as it is.
- **B. comprise (Correct)** — The term "comprise" is not used correctly here; "composed" would be more appropriate.
- **C. and (Incorrect)** — This conjunction is correctly used.
- **D. committee (Incorrect)** — The term “committee” itself is not an error.

**Correct Answer:** B. comprise

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**Question 3.** The purists got help when two important actors **preemptively rejected** compromise.
- **A. got help (Incorrect)** — This part is acceptable.
- **B. purists (Incorrect)** — This term is not an error.
- **C. to compromise (Correct)** — This phrase should just be "compromise."
- **D. preemptively (Incorrect)** — This adverb is used correctly.

**Correct Answer:** C. to compromise

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**Question 4.** We can look at the escalating Korean **conflict** to gauge the impact of the latter.
- **A. the escalating (Incorrect)** — This part is acceptable.
- **B. gauge (Incorrect)** — The term "gauge" is correct.
- **C. look at (Incorrect)** — This phrase is correctly used.
- **D. conflicting (Correct)** — "Conflict" should replace "conflicting."

**Correct Answer:** D. conflicting

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**Question 5.** Protesters demand that the Communist Party **confront** Taiwan and the United States.
- **A. the United States (Incorrect)** — This part is correct as it is.
- **B. demand (Incorrect)** — The verb is used correctly.
- **C. confronts (Correct)** — "Confronts" should change to "confront" since it follows "that."
- **D. Communist Party (Incorrect)** — This is acceptable.

**Correct Answer:** C. confronts

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**COLLOCATIONS (21)**

**Question 6.** Some researchers suspect that babies born **in** spring and summer are more susceptible to the disease.
- **A. in (Correct)** — This is the correct preposition.
- **B. on (Incorrect)** — This preposition does not fit here.
- **C. of (Incorrect)** — This preposition does not fit here.
- **D. into (Incorrect)** — This preposition does not fit here.

**Correct Answer:** A. in

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**Question 7.** The issue of **child abuse** and neglect is rarely discussed until a tragedy occurs.
- **A. child misdeed (Incorrect)** — This is not the right term.
- **B. child wrongdoing (Incorrect)** — This is not the right term.
- **C. child impairment (Incorrect)** — This is not the right term.
- **D. child abuse (Correct)** — This is the commonly accepted term.

**Correct Answer:** D. child abuse

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**Question 8.** It's common for homeowners **to do** the front yard one year and the back the next.
- **A. doing (Incorrect)** — This form does not fit.
- **B. to do (Correct)** — This infinitive form is correct.
- **C. done (Incorrect)** — This form does not fit.
- **D. to doing (Incorrect)** — This form does not fit.

**Correct Answer:** B. to do

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**Question 9.** Besides, Kenyan money is a bit valueless as $25,000 is **equal to** one million here.
- **A. impartial to (Incorrect)** — This term does not fit.
- **B. equal to (Correct)** — This is the correct phrase.
- **C. objective to (Incorrect)** — This term does not fit.
- **D. unprejudiced to (Incorrect)** — This term does not fit.

**Correct Answer:** B. equal to

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**Question 10.** There were Dutch and French as well as West African branches on his **family** tree.
- **A. family (Correct)** — This is the correct term.
- **B. household (Incorrect)** — This term does not fit in this context.
- **C. heredity (Incorrect)** — This term is not fitting fit for the tree analogy.
- **D. ancestry (Incorrect)** — This term is less commonly used in this colloquial expression.

**Correct Answer:** A. family

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These are the correct answers along with a brief explanation for each.