[ Grammar ]
The dinosaurs —- for millions of years before humans appeared on Earth.
A. have been extinct
B. had been extinct
C. were extinct
D. are extinct
Select your answer:

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Tenses › View. She will have been teaching at the school for a decade by the end of this year.
A. Future Perfect Continuous
B. Past Perfect Tense
C. Present Continuous Tense
D. Future Simple Tense
Grammar › View
My mother goes to a ………… to buy daily needs.
A. Library
B. Book store
C. Supermarket
D. Hospital
