[ Grammar ]
The first large predators on Earth, according to some sources, was sea scorpions that grew to almost six feet in length.
A. NO CHANGE
B. were
C. is
D. has been
Select your answer:

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ClausesTense,noun,preposition,quantityPassive Modals in Different TensesCoordinating ConjunctionsSentence CompletionPast Tense and Perfect TenseTenses with Time ExpressionsSimple Past Tense and Present Continuous TenseThe First Conditional (if/unless)Gerund, Infinitive & ModalsOther quiz:
Simple Past Continuos › ViewMy uncle _____ me to the airport yesterday.
A. took
B. taked
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Grammar › View
Frank____ for a long time before he went to see the doctor.
A. had slept
B. has slept
C. was sleeping
D. is sleeping
