[ Grammar ]
Which sentence is correct?
A. Scientists in Argentina discovered the bones of a titanosaur, an exceptionally large dinosaur heavier than fourteen elephants combined.
B. Heavier than fourteen elephants combined, scientists in Argentina discovered the bones of an exceptionally large dinosaur called a titanosaur.

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Sentence Structure and PunctuationComparatives, Superlatives, and ModalsUnreal ConditionalsGrammar Pronoun and Singular Plural NounPast Simple - Present PerfectPresent simple, Present continuous, Singular, PluralSubject Verb Agreement and Coordinating ConjunctionsQuantifierArticles & QuantifiersFuture Tenses and ModalsOther quiz:
Vocabulary and Grammar › View. He _____ my tablet for months before he decided to buy his own.
A. had been borrowing
B. had borrowed
C. borrowed
D. borrows
Verb Tenses › View
W e______up the hill for half an hour when we realized
w e______ in the direction of the castle.
A. were walking – haven’t been going
B. had been walking – weren’t going
C. have been walking – didn’t go
D. had walked – wouldn’t be going