[ Grammar ]
Which perfect tense is being used?
The birds have flown back and forth across the plains.
A. past perfect
B. present perfect
C. future perfect

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Common Error › ViewShe rubbed her eyes………………
A. hardly
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C. harder
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What verb tense do you use for something that was started and completed in the past?
A. Past perfect
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My little sister only gets one ….
A. books
B. bookes
C. book
