Difficulty: Medium
Average Score: 91%
Entry Exam
The surgeon started to perform the operation, but the patient was not yet completely under anesthesia.
Correct answer
B
Rationale
The correct choice is 'B: Perform.' The word 'preform' in the original sentence is incorrect; it should be 'perform.' 'Started to' is grammatically correct. 'Was not' and 'completely under' are also correct in the context of the sentence. Therefore, the correct answer is 'B: Perform,' as it is the only choice that needed correction.