The ______ for a vaccine could take up to a year.
- A. chase
- B. pursuit
- C. track
- D. search
Explanation
Search for is the standard collocation meaning an attempt to find something. Chase and track do not normally fit this sentence, while pursuit would require a different structure such as “the pursuit of a vaccine.”
Related questions
Complete the sentence: The scientist's findings were so ____ that no one could dispute them.
Complete the sentence: Despite his ____ manner, he was in fact deeply insecure.
Complete the sentence: The new drug must undergo rigorous trials ____ it can be approved for public use.
Complete the sentence: The results were inconclusive; ____, further research is needed.
Complete the sentence: The patient's condition ____ steadily since the operation.