[ Grammar & Vocabulary ]
The number of volunteers at the hospital _____________ in recent years.
A. decrease
B. decreases
C. has decreased
D. have decreased

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Connectives (because, due to, owing to, because of)Present Perfect ContinuousLexico and GrammarPossessive Adjectives and Possessive PronounsPresent Progressive or Present SimpleSentence Types and ConjunctionsHope, Thank, Modal VerbsMix-TensesTemporal Conjunctions and ConnectivesComparative AdjectiveOther quiz:
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A. go
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We often … that.
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Sir Alexander Fleming ___ penincillin .
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