[ Grammar ]
We ___ our teacher after she helped us.
A. thanking
B. thanked
C. thanks
D. thank

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Gerund/ To Verb/ VerbTOEIC Grammar and Vocabulary ReviewPositive and Negative ConnotationsGrammar PhrasesModal PerfectPerfect TensesEssential and Nonessential ClausesGerund & ParticipleAdverbs or AdjectivesMixed TensesOther quiz:
Grammar › ViewI have ………….big dog.
A. a
B. some
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What does ‘concentration’ refer to?
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It …..time you learned to swim
A. big
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