Origin Genomics Seeks to Show That Embryo Gene Editing’s Potential Benefits Outweigh Its Risks

Study the questions and tasks

Work through the material below, or start the interactive practice above to complete an attempt. Try the exercises before opening any answer or transcript sections, then use them to review your work.

Practice level

C2. Try this level if you can follow the instructions and understand most of the language; choose an earlier level if you need more support.

Question formats

Single choice

How to approach this practice

Read the complete sentence and notice the subject, verb form, time reference and word order before answering.

1. Question 1 · Single choice

   Choose one answer.

   Which revision preserves the article’s meaning and uses an appropriate concessive structure?

   1. Although the company seeks proof, the balance remains unestablished.
   2. Although the company seeks proof, but the balance remains unestablished.
   3. Despite the company seeks proof, the balance remains unestablished.
   4. The company seeks proof, although but the balance remains unestablished.
   Check answers and explanations

   Answer

   Although the company seeks proof, the balance remains unestablished.

   “Although” correctly contrasts the stated aim with the absence of proof.

2. Question 2 · Single choice

   Choose one answer.

   Choose the most precise inversion for formal emphasis.

   1. Not described as safe is the technology in the package.
   2. Not is the technology described as safe in the package.
   3. Not only the technology is described as safe in the package.
   4. Not described the package is the technology as safe.
   Check answers and explanations

   Answer

   Not is the technology described as safe in the package.

   Negative inversion correctly places emphasis on the absence of demonstrated safety.

3. Question 3 · Single choice

   Choose one answer.

   Which sentence uses a reduced relative clause correctly?

   1. NPR identified the objective in coverage published September 29, 2026.
   2. NPR identified the objective in coverage publishing September 29, 2026.
   3. NPR identified the objective in coverage was published September 29, 2026.
   4. NPR identified the objective in coverage having publish September 29, 2026.
   Check answers and explanations

   Answer

   NPR identified the objective in coverage published September 29, 2026.

   “Published” correctly reduces “that was published” after “coverage.”

4. Question 4 · Single choice

   Choose one answer.

   Choose the grammatically correct mixed conditional.

   1. If the evidence had been sufficient, the claim would be established now.
   2. If the evidence were sufficient, the claim would have established now.
   3. If the evidence had been sufficient, the claim would establish yesterday.
   4. If the evidence was sufficient, the claim would have been establishing now.
   Check answers and explanations

   Answer

   If the evidence had been sufficient, the claim would be established now.

   The structure links an unreal past condition with a present consequence.

5. Question 5 · Single choice

   Choose one answer.

   Which sentence correctly uses a mandative subjunctive construction?

   1. The review recommends that the company provides more evidence.
   2. The review recommends that the company provide more evidence.
   3. The review recommends that the company providing more evidence.
   4. The review recommends that the company has provided more evidence.
   Check answers and explanations

   Answer

   The review recommends that the company provide more evidence.

   Formal American English permits the base verb after “recommend that.”

6. Question 6 · Single choice

   Choose one answer.

   Which sentence correctly avoids a dangling modifier?

   1. Seeking to prove safety, the company’s evidence was examined.
   2. Seeking to prove safety, the company examined its evidence.
   3. Seeking to prove safety, the evidence examined the company.
   4. Seeking to prove safety, there was an examination of evidence.
   Check answers and explanations

   Answer

   Seeking to prove safety, the company examined its evidence.

   The introductory phrase logically modifies the company, its grammatical subject.

7. Question 7 · Single choice

   Choose one answer.

   Choose the sentence with the most appropriate parallel structure.

   1. The package supports assessing risks and to identify limitations.
   2. The package supports assessing risks and identifying limitations.
   3. The package supports to assess risks and identifying limitations.
   4. The package supports assessment risks and identify limitations.
   Check answers and explanations

   Answer

   The package supports assessing risks and identifying limitations.

   The coordinated gerunds create balanced grammatical elements.

8. Question 8 · Single choice

   Choose one answer.

   Which sentence correctly expresses an unrealized past possibility?

   1. The technology could produce benefits last year.
   2. The technology could have produced benefits, but results were unavailable.
   3. The technology could producing benefits, but results were unavailable.
   4. The technology could has produced benefits, but results were unavailable.
   Check answers and explanations

   Answer

   The technology could have produced benefits, but results were unavailable.

   “Could have produced” marks a past possibility that did not materialize or remains uncertain.

What to review next

After checking an answer, explain the rule in your own words and write a new sentence using the same pattern. Revisit any rules you could not explain.

A focused practice result shows how you did on these tasks. Use several activities across skills to decide what to study next; one practice score does not certify an overall CEFR level.