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| Question 1 | |
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| Martha has been _________ piano for two hours. | |
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| A. | played | B. | plays | |
| C. | playing | D. | play | |
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| Question 2 | |
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| So far, it has ___________ for six hours. | |
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| A. | snows | B. | snowed | |
| C. | snow | D. | snowing | |
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| Question 3 | |
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| Scientists have __________ nearly a thousand different dinosaur species. | |
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| A. | identify | B. | identifying | |
| C. | identifies | D. | identified | |
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| Question 4 | |
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| Extinction __________ an important role in the distribution of organisms. | |
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| A. | playing | B. | play | |
| C. | plays | D. | playful | |
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| Question 5 | |
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| Has it _______________ snowing since the show started? | |
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| A. | been | B. | be | |
| C. | was | D. | have | |
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| Question 6 | |
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| How long had Jenna been ______________ for the flight to take off? | |
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| A. | waits | B. | waited | |
| C. | wait | D. | waiting | |
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| Question 7 | |
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| Most of the first Triassic dinosaurs ________ small and quick meat-eaters. | |
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| A. | was | B. | were | |
| C. | have | D. | been | |
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| Question 8 | |
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| The show has been __________ due to bad weather. | |
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| A. | cancel | B. | cancelled | |
| C. | cancels | D. | cancelling | |
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| Question 9 | |
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| By next Monday, I will __________ received my first paycheck.
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| A. | has | B. | be | |
| C. | been | D. | have | |
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| Question 10 | |
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| Tammy will have been ____________ for ten hours by the time you pick her up. | |
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| A. | working | B. | worked | |
| C. | works | D. | work | |
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