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Please answer the question below.

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Which of the following sentences uses the Present Perfect Continuous tense correctly?

She has visited her grandmother.

This sentence uses Present Perfect tense, not Present Perfect Continuous tense.

They have been eat dinner.

The grammatically correct verb form should be eating.

We have been studying for the exam since January.

He has been plays soccer every Thursday.

This sentence uses incorrect verb form. The correct form should be playing.