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Identify the segment in the sentence which contains a grammatical error.
The students have been doing yoga since an hour.
The students
since an hour
doing yoga
have been
- Option 1: The students
- This part is a correct subject phrase.
- Option 2: Since an hour
- This segment is incorrect. The preposition "since" is used with specific points in time, while "for" is used for durations. The correct phrase should be "for an hour."
- Correct Answer
- Option 3: Doing yoga
- This phrase correctly represents the continuous action in the present perfect continuous tense.
- Option 4: Have been
- This part is correctly used for actions that started in the past and are still continuing.
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