"Postoperative patients who fail to exercise as regular as their doctors recommend take longer to recover from surgery than more active patients do."
Correct answer: C. regular
- A. who
- B. exercise
- C. regular
- D. recover from
Explanation
The word "regular" is an adjective, but an adverb is needed to modify the verb "exercise." The correct phrase should be "exercise as regularly as their doctors recommend."
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