[ Vocabulary & Grammar ]
The factories have closed for the weekend to ________ energy.
A. preservation
B. conservation
C. conserve
D. preserve

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Academic VocabularySimple Present and Present ContinuousSimple Present vs Present ProgresiveComparison DegreeSimple Future - WillIrregular AdjectivesPerfect TensesModals of ProbabilityNarrative, Past TensesSimple Past TensesOther quiz:
Verb Tense › ViewIs the verb tense past perfect, present perfect or future perfect? ‘The researchers had published their findings before the conference.’
A. Past perfect
B. Present perfect
C. Future perfect
D. Simple past
Grammar › View
Identify Parts of Speech: Kim walked into the store.
A. Pronoun
B. Preposition
C. Conjunction
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Grammar › ViewI’ve ___ to call the internet company all morning but nobody picked up the call.
A. tried
B. been trying
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She ___ have passed the exam.
A. must
B. should
C. would
D. may