[ Vocabulary & Grammar ]
We must protect the _____in order to preserve our heritage for future generations.
A. limestone
B. valley
C. ecosystem
D. original

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IdiomsArgumentative VocabularyFinite and Non-Finite VerbVerb + Infinitive or GerundTOEIC Grammar and Vocabulary ReviewArticle & PrepositionPhrasal VerbSimple Present vs Present ProgresiveIf ConditionalsSubject Verb Agreement and Coordinating ConjunctionsOther quiz:
Infinitive Gerund › ViewYou’ve never mentioned__________in Japan before.
A. to be
B. being
C. be
Antonyms › View
Once in a while
A. Request
B. Calm
C. Often